CN107211335B - Cell reselection method and user terminal - Google Patents

Abstract

The embodiment of the invention discloses a cell reselection method and a user terminal, wherein the method comprises the following steps: the user terminal obtains a measurement list of reselection parameters including same frequency and/or different frequency from a network server, performs signal measurement on cells under the frequency points supported by the user terminal to obtain measurement parameters corresponding to each cell and having the same type as the reselection parameters, and selects cells with measurement parameters superior to the reselection parameters from the cells under the frequency points supported by the user terminal to form a target cell set, thereby selecting a first cell from the target cell set for residence. By implementing the embodiment of the invention, the user terminal can measure the signal of the cell under the supporting frequency point in the measurement list and select the cell from the target cell set meeting the residence condition for residence, thereby avoiding that more user terminals reside in the cell with higher priority at the same time, reducing the load of the cell with higher priority to a certain extent, improving the load balance degree among the cells and improving the utilization rate of network resources.

Description

Cell reselection method and user terminal

technical field

Embodiments of the present invention relate to the field of communications technologies, and in particular, to a cell reselection method and a user terminal.

Background technique

Currently, in a Universal Mobile Telecommunication System (UMTS) and a Long Term Evolution (Long Term Evolution, LTE) system, a user equipment (User Equipment, UE) in a non-proprietary state usually performs a process of cell reselection. Among them, in UMTS, the UE in the non-exclusive state includes the idle state, the cell paging state (Cell Paging Channel, CELL-PCH), the registration area paging state (UTRAN Registration Area Paging Channel, URA-PCH) and the cell forwarding state. A UE in an access channel state (CellForward Access Channel, CELL-FACH), and in an LTE system, a UE in a non-exclusive state is a UE in an idle state.

In the actual cell reselection process, taking the LTE system as an example, the network server will first broadcast the priority list of each cell in the system message block, and the UE in the idle state will reselect the cell according to the priority in the priority list. Signal measurements are performed on cells in the order of high to low, so as to camp on a cell that meets the camping conditions. However, this may lead to a large number of idle UEs camping on the same cell with a higher priority at the same time, while the number of idle UEs camping on a cell with a lower priority is less, so that between cells The load is not balanced, thereby reducing the utilization of network resources.

SUMMARY OF THE INVENTION

The embodiment of the present invention discloses a cell reselection method and a user terminal, which can improve the load balancing degree among cells and improve the utilization rate of network resources.

A first aspect of the embodiments of the present invention discloses a cell reselection method, including:

Acquire a measurement list from the network server, where the measurement list includes reselection parameters of intra-frequency and/or inter-frequency, the intra-frequency is the frequency of the current serving cell of the user terminal, and the inter-frequency is the same frequency as the current serving cell of the user terminal The frequency points where the serving cell is located are different;

performing signal measurement on the cells under the frequency points supported by the user terminal in the measurement list, to obtain measurement parameters corresponding to each cell that are of the same type as the reselection parameter;

From the cells at the frequencies supported by the user terminal, select cells whose measurement parameters are better than the reselection parameters to form a target cell set;

A first cell is selected from the set of target cells to camp on.

With reference to the first aspect of the embodiment of the present invention, in a first possible implementation manner of the first aspect of the embodiment of the present invention, the selecting the first cell from the set of target cells to camp on includes:

The first cell is randomly selected from the target cell set, and camps on the first cell.

With reference to the first aspect of the embodiment of the present invention, in a second possible implementation manner of the first aspect of the embodiment of the present invention, the selecting the first cell from the target cell set to camp on includes:

Select the first cell from the target cell set according to a preset order, and obtain the reselection factor of the first cell;

Generate a random number for the first cell, and determine whether the random number is less than or equal to the reselection factor, where the random number ranges from 0 to 1;

When the random number is less than or equal to the reselection factor, camp on the first cell.

With reference to the second possible implementation manner of the first aspect of the embodiment of the present invention, in the third possible implementation manner of the first aspect of the embodiment of the present invention, the method further includes:

When the random number is greater than the reselection factor, acquiring the number of times of selecting cells from the target cell set according to the preset order;

Determine whether the selection times are less than the preset selection control times;

When the selection times are less than the preset selection control times, select a second cell from the target cell set again according to a preset order, and obtain a reselection factor of the second cell;

When the selection times is equal to the preset selection control times, camp on the first cell.

In combination with the second possible implementation manner of the first aspect of the embodiments of the present invention or the third possible implementation manner of the first aspect of the embodiments of the present invention, in the fourth possible implementation manner of the first aspect of the embodiments of the present invention , before the selecting the first cell from the target cell set according to the preset order and acquiring the reselection factor of the first cell, the method further includes:

configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Obtain load information of each cell in the target cell set from the network server;

Select the most loaded cell from the set of target cells according to the load information, and reduce the average reselection factor of the most loaded cell to obtain the reselection factor of the most loaded cell;

and, increasing the average reselection factors of the remaining cells in the target cell set except the most loaded cell to obtain the reselection factors of the remaining cells, wherein the reselection factor of the most loaded cell is the same as the The sum of the reselection factors of the remaining cells is 1.

With reference to the second possible implementation manner of the first aspect of the embodiments of the present invention or the third possible implementation manner of the first aspect of the embodiments of the present invention, in the fifth possible implementation manner of the first aspect of the embodiments of the present invention , before the selecting the first cell from the target cell set according to the preset order and acquiring the reselection factor of the first cell, the method further includes:

configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Identify a target cell that is different from the historically camped cell of the user terminal from the target cell set, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, wherein the The frequency of the target cell is different from the frequency of the cell where the user terminal historically resides;

and, reducing the average reselection factor of the remaining cells in the target cell set except the target cell to obtain the reselection factor of the remaining cells, wherein the reselection factor of the target cell is the same as the remaining cell reselection factor The sum of the reselection factors of the cells is 1.

With reference to the second possible implementation manner of the first aspect of the embodiments of the present invention or the third possible implementation manner of the first aspect of the embodiments of the present invention, in the sixth possible implementation manner of the first aspect of the embodiments of the present invention , before the selecting the first cell from the target cell set according to the preset order and acquiring the reselection factor of the first cell, the method further includes:

configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Select the highest priority cell from the target cell set, and increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell;

and, reducing the average reselection factor of the remaining cells in the target cell set except the highest priority cell to obtain the reselection factor of the remaining cells, wherein the reselection factor of the highest priority cell The sum of the reselection factors with the remaining cells is 1.

With reference to the second possible implementation manner of the first aspect of the embodiments of the present invention or the third possible implementation manner of the first aspect of the embodiments of the present invention, in the seventh possible implementation manner of the first aspect of the embodiments of the present invention , before the selecting the first cell from the target cell set according to the preset order and acquiring the reselection factor of the first cell, the method further includes:

configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Obtain load information of each cell in the target cell set from the network server;

Select the most loaded cell from the set of target cells according to the load information, and reduce the average reselection factor of the most loaded cell to obtain the reselection factor of the most loaded cell;

Identify a target cell that is different from the historically camped cell of the user terminal from the target cell set, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, wherein the The frequency of the target cell is different from the frequency of the cell where the user terminal historically resides;

Select the highest priority cell from the target cell set, and increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell;

According to the reselection factor of the most loaded cell, the reselection factor of the target cell and the reselection factor of the highest priority cell, adjust the set of target cells except the most loaded cell, the target cell and the the average reselection factors of the remaining cells other than the highest priority cell to obtain the reselection factors of the remaining cells, wherein the reselection factors of the most loaded cell, the reselection factors of the target cell and the The sum of the reselection factor of the highest priority cell and the reselection factors of the remaining cells is 1.

With reference to the second possible implementation manner of the first aspect of the embodiments of the present invention or the third possible implementation manner of the first aspect of the embodiments of the present invention, in the eighth possible implementation manner of the first aspect of the embodiments of the present invention , the measurement list further includes the intra-frequency and/or inter-frequency reselection factors, and the acquiring the reselection factors of the first cell includes:

The reselection factor of the frequency point where the first cell is located is obtained from the measurement list.

A second aspect of the embodiments of the present invention discloses a user terminal, including:

an acquisition module, configured to acquire a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters, the intra-frequency is the frequency point where the current serving cell of the user terminal is located, and the inter-frequency is a frequency point different from the frequency point where the current serving cell of the user terminal is located;

a measurement module, configured to perform signal measurement on the cells under the supported frequencies of the user terminal in the measurement list, and obtain measurement parameters corresponding to each cell that are of the same type as the reselection parameter;

A selection module, configured to select cells whose measurement parameters are better than the reselection parameters from cells under the supported frequencies of the user terminal to form a target cell set;

A camping module, configured to select a first cell from the set of target cells to camp on.

With reference to the second aspect of the embodiment of the present invention, in a first possible implementation manner of the second aspect of the embodiment of the present invention, the camping module selects the first cell from the target cell set to camp on The way is:

The first cell is randomly selected from the target cell set, and camps on the first cell.

With reference to the second aspect of the embodiment of the present invention, in a second possible implementation manner of the second aspect of the embodiment of the present invention, the resident module includes a selection sub-module, an acquisition sub-module, a judgment sub-module, and a resident sub-module, in:

the selection submodule, configured to select the first cell from the target cell set according to a preset order;

the obtaining submodule, configured to obtain the reselection factor of the first cell;

The judging sub-module is configured to generate a random number for the first cell, and judge whether the random number is less than or equal to the reselection factor, wherein the value range of the random number is 0-1;

The camping submodule is configured to camp on the first cell when the judging submodule determines that the random number is less than or equal to the reselection factor.

With reference to the second possible implementation manner of the second aspect of the embodiment of the present invention, in the third possible implementation manner of the second aspect of the embodiment of the present invention,

The acquisition submodule is further configured to, when the determination submodule determines that the random number is greater than the reselection factor, acquire the selection submodule to select cells from the target cell set according to the preset order number of selections;

The judging submodule is further configured to judge whether the selection times are less than the preset selection control times, and if so, trigger the selection submodule to select a second cell from the target cell set again according to the preset order; If not, trigger the camping submodule to camp on the first cell.

With reference to the second possible implementation manner of the second aspect of the embodiments of the present invention or the third possible implementation manner of the second aspect of the embodiments of the present invention, in the fourth possible implementation manner of the second aspect of the embodiments of the present invention , the user terminal further includes:

a configuration module, configured to configure an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

The obtaining module is further configured to obtain the load information of each cell in the target cell set from the network server;

The selection module is further configured to select the maximum load cell from the target cell set according to the load information;

The user terminal also includes:

An adjustment module, configured to reduce the average reselection factor of the maximum load cell, obtain the reselection factor of the maximum load cell, and increase the reselection factor of the remaining cells in the target cell set except the maximum load cell The reselection factors of the remaining cells are obtained by averaging the reselection factors, wherein the sum of the reselection factors of the most loaded cell and the reselection factors of the remaining cells is 1.

With reference to the second possible implementation manner of the second aspect of the embodiments of the present invention or the third possible implementation manner of the second aspect of the embodiments of the present invention, in the fifth possible implementation manner of the second aspect of the embodiments of the present invention , the user terminal further includes:

a configuration module, configured to configure an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

An identification module, configured to identify, from the set of target cells, a target cell that is different from the cell that the user terminal has historically camped on, wherein the frequency of the target cell is different from the frequency of the cell that the user terminal has historically camped on ;

an adjustment module, configured to increase the average reselection factor of the target cell, obtain the reselection factor of the target cell, and reduce the average reselection factor of the remaining cells in the set of target cells except the target cell factor to obtain the reselection factors of the remaining cells, wherein the sum of the reselection factors of the target cell and the reselection factors of the remaining cells is 1.

With reference to the second possible implementation manner of the second aspect of the embodiments of the present invention or the third possible implementation manner of the second aspect of the embodiments of the present invention, in the sixth possible implementation manner of the second aspect of the embodiments of the present invention , the user terminal further includes:

a configuration module, configured to configure an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

The selecting module is further configured to select the highest priority cell from the target cell set;

The user terminal also includes:

an adjustment module, configured to increase the average reselection factor of the highest priority cell, obtain the reselection factor of the highest priority cell, and reduce the target cell set except the highest priority cell The average reselection factors of the remaining cells are used to obtain the reselection factors of the remaining cells, wherein the sum of the reselection factors of the highest priority cell and the reselection factors of the remaining cells is 1.

With reference to the second possible implementation manner of the second aspect of the embodiments of the present invention or the third possible implementation manner of the second aspect of the embodiments of the present invention, in the seventh possible implementation manner of the second aspect of the embodiments of the present invention , the user terminal further includes:

a configuration module, configured to configure an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

The obtaining module is further configured to obtain the load information of each cell in the target cell set from the network server;

The selecting module is further configured to select the maximum load cell from the target cell set according to the load information, and select the highest priority cell from the target cell set;

The user terminal also includes:

An identification module, configured to identify, from the set of target cells, a target cell that is different from the cell that the user terminal has historically camped on, wherein the frequency of the target cell is different from the frequency of the cell that the user terminal has historically camped on ;

an adjustment module, configured to reduce the average reselection factor of the maximum load cell, obtain the reselection factor of the maximum load cell, increase the average reselection factor of the target cell, and obtain the reselection factor of the target cell , increase the average reselection factor of the highest-priority cell to obtain the reselection factor of the highest-priority cell, and obtain the reselection factor of the highest-priority cell according to the The reselection factor of the highest priority cell, adjust the average reselection factor of the remaining cells in the target cell set except the maximum load cell, the target cell and the highest priority cell to obtain the remaining cells The reselection factor of , wherein the sum of the reselection factor of the most loaded cell, the reselection factor of the target cell, the reselection factor of the highest priority cell and the reselection factors of the remaining cells is 1.

With reference to the second possible implementation manner of the second aspect of the embodiments of the present invention or the third possible implementation manner of the second aspect of the embodiments of the present invention, in the eighth possible implementation manner of the second aspect of the embodiments of the present invention , the measurement list further includes the intra-frequency and/or inter-frequency reselection factors, and the specific manner for the acquisition sub-module to acquire the reselection factors of the first cell is:

The reselection factor of the frequency point where the first cell is located is obtained from the measurement list.

A third aspect of the embodiments of the present invention discloses a user terminal, including:

A receiver, configured to receive a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters, the intra-frequency is the frequency point where the current serving cell of the user terminal is located, and the inter-frequency is a frequency point different from the frequency point where the current serving cell of the user terminal is located;

The processor is configured to perform signal measurement on the cells under the frequency points supported by the user terminal in the measurement list, and obtain measurement parameters corresponding to each cell that are of the same type as the reselection parameter; Among the cells under the click, select a cell whose measurement parameter is better than the reselection parameter to form a target cell set; and select a first cell from the target cell set to camp on.

With reference to the third aspect of the embodiment of the present invention, in a first possible implementation manner of the third aspect of the embodiment of the present invention, the processor selects the first cell from the set of target cells to camp on a specific manner for:

The first cell is randomly selected from the target cell set, and camps on the first cell.

With reference to the third aspect of the embodiment of the present invention, in a second possible implementation manner of the third aspect of the embodiment of the present invention, the processor selects the first cell from the target cell set to camp on a specific manner for:

Select the first cell from the target cell set according to a preset order, and obtain the reselection factor of the first cell;

Generate a random number for the first cell, and determine whether the random number is less than or equal to the reselection factor; wherein, the value range of the random number is 0-1;

When the random number is less than or equal to the reselection factor, camp on the first cell.

With reference to the second possible implementation manner of the third aspect of the embodiment of the present invention, in the third possible implementation manner of the third aspect of the embodiment of the present invention,

The processor is further configured to, when the random number is greater than the reselection factor, acquire the number of times of selecting cells from the set of target cells in the preset order; and determine whether the number of times of selection is less than a preset number selection control times; when the selection times are less than the preset selection control times, select a second cell from the target cell set again according to a preset order, and obtain the reselection factor of the second cell; When the selection times are equal to the preset selection control times, camp on the first cell.

With reference to the second possible implementation manner of the third aspect of the embodiments of the present invention or the third possible implementation manner of the third aspect of the embodiments of the present invention, in the fourth possible implementation manner of the third aspect of the embodiments of the present invention ,

The processor is further configured to, before selecting the first cell from the target cell set according to the preset order, and obtaining the reselection factor of the first cell, for each cell in the target cell set. configure an average reselection factor for each of the cells, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; obtain the load information of each cell in the target cell set from the network server; according to The load information selects the most loaded cell from the set of target cells, and reduces the average reselection factor of the most loaded cell to obtain the reselection factor of the most loaded cell; and, increases the set of target cells The average reselection factors of the remaining cells except the cell with the largest load in is 1.

In combination with the second possible implementation manner of the third aspect of the embodiments of the present invention or the third possible implementation manner of the third aspect of the embodiments of the present invention, in the fifth possible implementation manner of the third aspect of the embodiments of the present invention ,

The processor is further configured to, before selecting the first cell from the target cell set according to the preset order, and obtaining the reselection factor of the first cell, for each cell in the target cell set. Each cell is configured with an average reselection factor, wherein the average reselection factor is equal to the reciprocal of the number of cells in the target cell set; a target different from the historically camped cell of the user terminal is identified from the target cell set cell, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, wherein the frequency of the target cell is different from the frequency of the cell where the user terminal has historically camped; and, Decrease the average reselection factor of the remaining cells in the set of target cells except the target cell to obtain the reselection factor of the remaining cells, wherein the reselection factor of the target cell is the same as the reselection factor of the remaining cells. The sum of the reselection factors is 1.

With reference to the second possible implementation manner of the third aspect of the embodiments of the present invention or the third possible implementation manner of the third aspect of the embodiments of the present invention, in the sixth possible implementation manner of the third aspect of the embodiments of the present invention ,

The processor is further configured to, before selecting the first cell from the target cell set according to the preset order, and obtaining the reselection factor of the first cell, for each cell in the target cell set. Each cell is configured with an average reselection factor, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; the highest priority cell is selected from the target cell set, and the highest priority is increased the average reselection factor of the cell to obtain the reselection factor of the highest priority cell; and, reducing the average reselection factor of the remaining cells in the target cell set except the highest priority cell to obtain the The reselection factors of the remaining cells, wherein the sum of the reselection factors of the highest priority cell and the reselection factors of the remaining cells is 1.

With reference to the second possible implementation manner of the third aspect of the embodiments of the present invention or the third possible implementation manner of the third aspect of the embodiments of the present invention, in the seventh possible implementation manner of the third aspect of the embodiments of the present invention ,

The processor is further configured to, before selecting the first cell from the target cell set according to the preset order, and obtaining the reselection factor of the first cell, for each cell in the target cell set. configure an average reselection factor for each of the cells, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; obtain the load information of each cell in the target cell set from the network server; according to The load information selects the maximum load cell from the target cell set, and reduces the average reselection factor of the maximum load cell to obtain the maximum load cell reselection factor; identifying from the target cell set A target cell that is different from the cell where the user terminal has historically resided, and the average reselection factor of the target cell is increased to obtain the reselection factor of the target cell, where the frequency of the target cell and the user The frequency points of the cells where the terminal historically resides are different; the highest priority cell is selected from the target cell set, and the average reselection factor of the highest priority cell is increased to obtain the reselection factor of the highest priority cell; According to the reselection factor of the most loaded cell, the reselection factor of the target cell and the reselection factor of the highest priority cell, adjust the set of target cells except the most loaded cell, the target cell and the the average reselection factors of the remaining cells other than the highest priority cell to obtain the reselection factors of the remaining cells, wherein the reselection factors of the most loaded cell, the reselection factors of the target cell and the The sum of the reselection factor of the highest priority cell and the reselection factors of the remaining cells is 1.

With reference to the second possible implementation manner of the third aspect of the embodiments of the present invention or the third possible implementation manner of the third aspect of the embodiments of the present invention, in the eighth possible implementation manner of the third aspect of the embodiments of the present invention , the measurement list further includes the intra-frequency and/or inter-frequency reselection factors, and the specific manner in which the processor obtains the reselection factors of the first cell is as follows:

The reselection factor of the frequency point where the first cell is located is obtained from the measurement list.

In this embodiment of the present invention, after acquiring a measurement list including intra-frequency and/or inter-frequency reselection parameters from the network server, the user terminal performs signal measurement on the cells under the frequency points supported by the user terminal in the measurement list, and obtains each Each cell corresponds to the measurement parameters of the same type as the reselection parameter, and selects cells whose measurement parameters are better than the reselection parameters from the cells at the frequencies supported by the user terminal to form a target cell set. Select the first cell to camp on. Implementing the embodiment of the present invention, the user terminal can perform signal measurement on the cells under the supported frequency points in the measurement list to obtain a set of target cells that meet the camping conditions, and then select a cell from the set of target cells to camp on. , which can prevent most user terminals from camping in high-priority cells, and reduce the load pressure of high-priority cells to a certain extent, thereby improving load balance between cells and improving network resource utilization.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic diagram of a network architecture disclosed in an embodiment of the present invention;

2 is a schematic flowchart of a cell reselection method disclosed in an embodiment of the present invention;

3 is a schematic flowchart of another cell reselection method disclosed in an embodiment of the present invention;

4 is a schematic flowchart of another cell reselection method disclosed in an embodiment of the present invention;

5 is a schematic flowchart of another cell reselection method disclosed in an embodiment of the present invention;

6 is a schematic flowchart of another cell reselection method disclosed in an embodiment of the present invention;

7 is a schematic structural diagram of a user terminal disclosed in an embodiment of the present invention;

8 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention;

9 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention;

10 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention;

11 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention;

12 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The embodiment of the present invention discloses a cell reselection method and a user terminal, which can improve the load balancing degree among cells and improve the utilization rate of network resources. Each of them will be described in detail below.

In order to better understand a cell reselection method and a user terminal disclosed in the embodiments of the present invention, the following describes the network architecture applicable to the embodiments of the present invention. Please refer to FIG. 1. FIG. 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present invention. In the network architecture shown in FIG. 1, a network server and a user terminal may be included. Wherein, network servers may include but are not limited to base stations, wireless network controllers, base station controllers, etc., and user terminals may include but are not limited to mobile phones, tablet computers, personal digital assistants (Personal Digital Assistant, PDA), mobile Internet devices (Mobile Internet Device, MID), etc. By implementing the network architecture shown in FIG. 1 , when performing cell reselection, the user terminal can obtain the reselection parameters of each adjacent cell and/or the frequency point where the adjacent cell is located, the adjacent cell and/or phase reselection parameters from the network server. Information such as the load of the frequency point where the adjacent cell is located, the priority of the adjacent cell and/or the frequency point where the adjacent cell is located, etc., so that the user terminal can quickly and reliably implement cell reselection.

Based on the network architecture shown in FIG. 1 , an embodiment of the present invention discloses a cell reselection method. Please refer to FIG. 2, which is a schematic flowchart of a cell reselection method disclosed in an embodiment of the present invention. As shown in Figure 2, the cell reselection method may include the following steps:

S201. A user terminal acquires a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters.

In this embodiment of the present invention, the network server may broadcast the measurement list to all user terminals in the current cell, or may send the measurement list to each user terminal separately, which is not limited in the embodiment of the present invention. Therefore, the manner in which the user terminal obtains the measurement list from the network server may be broadcast by the network server, or may be separately sent by the network server to the user terminal.

The same frequency is the frequency point where the current serving cell of the user terminal is located, and the different frequency is the frequency point that is different from the frequency point where the current serving cell of the user terminal is located. The intra-frequency and/or inter-frequency reselection parameters can be understood as frequency reselection parameters, and the frequencies in the measurement list are the frequencies where the adjacent cells of the current serving cell of the user terminal are located. When one frequency point corresponds to one cell, the reselection parameters of the same frequency and/or different frequency can also be understood as the reselection parameters of the cells under each frequency point, that is, the reselection parameters of the adjacent cells of the current serving cell of the user terminal .

The reselection parameters may include, but are not limited to, reference signal reception quality threshold, reference signal reception power threshold, signal-to-interference-noise ratio threshold, path loss threshold, delay time, etc. of each adjacent cell or the frequency point where each adjacent cell is located .

It should be noted that the reselection parameters included in the measurement list broadcast by the network server or sent to the user terminal may be the reselection parameters of the frequency points where the adjacent cells of the current serving cell of the user terminal are located, as shown in Table 1; The reselection parameters of the adjacent cells of the current serving cell of the terminal, as shown in Table 2; it can also be the reselection parameters of the network standard of the adjacent cells of the current serving cell of the user terminal, such as 2G, 3G, 4G network systems, as shown in Table 3, This embodiment of the present invention is not limited.

Table 1 The measurement list of the reselection parameters of the frequency point where the adjacent cell is located

Frequency Reselection parameters F1 A F2 B

Table 2 Measurement list of reselection parameters of neighboring cells

Frequency community Reselection parameters F1 cell 1 A F1 cell 2 A F2 cell 3 B F2 cell 4 B

Table 3 The measurement list of the reselection parameters of the network standard to which the adjacent cell belongs

network standard Reselection parameters 2G K 3G J 4G L

For the convenience of description, the embodiment of the present invention is mainly described in terms of the reselection parameters of the frequency points where the adjacent cells of the current serving cell of the user terminal are located in the measurement list.

S202. The user terminal performs signal measurement on the cells under the frequency points supported by the user terminal in the measurement list, and obtains a measurement parameter corresponding to each cell that is of the same type as the reselection parameter.

In the embodiment of the present invention, after acquiring the measurement list including the reselection parameters of the frequency points of the cells adjacent to the cell where the user terminal belongs, the user terminal performs signal measurement on each cell under the frequency points supported by the user terminal in the measurement list. , so as to obtain the measurement parameters corresponding to each cell. The user terminal may measure the signal of each cell under each frequency point according to the order in which the frequency points are arranged in the measurement list, or may measure each cell under each frequency point in the order of the priority of the frequency points. The cell performs signal measurement, which is not limited in this embodiment of the present invention.

The parameter type included in the measurement parameter corresponding to each cell is the same as the parameter type included in the reselection parameter of the frequency point to which the cell belongs. That is to say, when the reselection parameters of a frequency point include the reference signal reception quality threshold, the reference signal reception power threshold, and the signal-to-interference-noise ratio threshold of the frequency point, the user terminal will focus on the signal reception quality, signal reception power and Signal-to-interference-noise ratio: measure the signal of the cell at the frequency point, so as to obtain the signal reception quality, signal reception power, and signal-to-interference-noise ratio corresponding to each cell at the frequency point.

For example, if the measurement list broadcasted by the network server includes the reselection parameters of the frequency points belonging to each cell adjacent to the cell where the user terminal is located, the frequency points include F1, F2, F3, F4, and F5, and the user terminal The supported frequency points are F2, F3, F5, and F6. After obtaining the measurement list, the user terminal will perform signal measurement on the cells under the frequency points F2, F3, and F5, respectively. Assuming that the reselection parameters of the frequency points in the measurement list are the reference signal reception quality threshold and the signal-to-interference-noise ratio, the cell under the F2 frequency point has cell2 and cell3, the cell under the F3 frequency point has cell4, and the cell under the F5 frequency point has cell6 and cell7, then the user terminal will measure the signals of the five cells, cell2, cell3, cell4, cell6, and cell7, respectively, so as to obtain the measurement parameters of the signal reception quality and the signal-to-interference-noise ratio corresponding to each cell.

S203: The user terminal selects, from the cells under the frequency point supported by the user terminal, cells whose measurement parameters are better than the reselection parameters to form a target cell set.

In the embodiment of the present invention, after the user terminal performs signal measurement on a cell under the supported frequency point in the measurement list, and obtains the measurement parameter corresponding to the cell, the user terminal will match the measurement parameter with the reselection parameter of the frequency point where the cell is located. By comparison, if the measurement parameter is better than the reselection parameter, the cell is regarded as a cell in the target cell set.

Wherein, when the reselection parameters of the frequency point to which a certain cell belongs include the reference signal reception quality threshold, the reference signal reception power threshold, and the signal-to-interference-noise ratio threshold, the measurement parameters obtained by the user terminal after measuring the signal of the cell also include the cell Therefore, it can be understood that the measurement parameter is better than the reselection parameter: each parameter in the measurement parameter is greater than the reselection parameter; when the reselection of the frequency point to which a cell belongs When the parameter includes the path loss threshold, the measurement parameter obtained by the user terminal after measuring the signal of the cell also includes the path loss of the cell. Therefore, the measurement parameter is better than the reselection parameter can be understood as: the path loss is less than the path loss threshold.

S204, the user terminal selects the first cell from the target cell set to camp on.

In the embodiment of the present invention, after the user terminal performs signal measurement on the cells under the supported frequency points in the measurement list and selects the target cell set, the user terminal selects the first cell from the target cell set to camp on.

Specifically, the specific manner in which the user terminal selects the first cell from the target cell set to camp on may be:

The first cell is randomly selected from the target cell set to camp on. That is to say, each cell in the target cell set has the same probability of being selected by the user terminal, which can prevent most user terminals from camping on the cell with a large load at the same time, thereby reducing the load pressure of the cell with a large load and realizing the Load balancing between cells.

It can be seen that in the method described in FIG. 2, when performing cell reselection, the user terminal can perform signal measurement on the cells under the supported frequency points through the reselection parameters in the measurement list, so as to select the cells that meet the camping conditions. Then, the first cell is selected for camping in these cells, which can disperse the load pressure of the cells with larger loads to a certain extent, thereby improving the load balance among the cells and improving the utilization rate of network resources.

Based on the network architecture shown in FIG. 1 , another method for cell reselection is disclosed in the embodiment of the present invention. Please refer to FIG. 3 , which is a schematic flowchart of another cell reselection method disclosed in an embodiment of the present invention. As shown in Figure 3, the cell reselection method may include the following steps:

S301. A user terminal acquires a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters.

S302: The user terminal performs signal measurement on the cells under the frequency points supported by the user terminal in the measurement list, and obtains a measurement parameter corresponding to each cell that is of the same type as the reselection parameter.

S303 , the user terminal selects cells whose measurement parameters are better than the reselection parameters from the cells in the frequency points supported by the user terminal to form a target cell set.

S304: The user terminal selects a first cell from the target cell set according to a preset order, and acquires a reselection factor of the first cell.

In this embodiment of the present invention, after selecting the target cell set that satisfies the camping condition from the measurement list, the user terminal may configure a reselection factor for each cell in the target cell set, and the reselection factor is that each cell is The probability that the user terminal successfully resides after selection. The sum of the reselection factors of all cells in the target cell set is 1.

Therefore, after selecting the target cell set from the cells under the supported frequencies in the measurement list, the user terminal selects the first cell from the target cell set in a preset order, and simultaneously obtains the weight of the first cell locally. selection factor. The preset order may be the order of the frequencies where the cells are located in the measurement list, or may be the priority order of the frequencies where the cells are located, which is not limited in this embodiment of the present invention.

For example, assuming that the target cell set selected by the user terminal from the measurement list includes cell4, cell5 and cell6, and the reselection factors configured by the user terminal for these three cells are 0.5, 0.3 and 0.2 respectively, then when the user terminal according to When the sequence of the frequency points where the cells are located in the measurement list is selected to cell6, the reselection factor of cell6 can be obtained locally, which is 0.2.

As a feasible implementation manner, the reselection factor of the cell may also be configured by the network server. When the network server broadcasts or sends the measurement list, the measurement list includes the reselection factor of each frequency point, wherein the sum of the reselection factors of all the frequency points in the measurement list is 1. It should be noted that the reselection factor of the cell under each frequency point is the reselection factor of the frequency point. Therefore, after selecting the first cell from the target cell set according to the preset order, the user terminal can obtain the reselection factor of the frequency point where the first cell is located from the measurement list.

For another example, the reselection parameter measurement list of each frequency point broadcast by the network server is shown in Table 1, and the reselection factor configured for each frequency point, that is, the reselection factor of frequency point F1 is 0.6, and the reselection factor of frequency point F2 is 0.6. The factor is 0.4. When the user terminal performs signal measurement on the cells cell1, cell2, cell3 and cell4 under the supported frequencies F1 and F2 in the measurement list, the measurement parameters of the cells cell2 and cell3 are better than the reselection parameters of F1 and F2 respectively. Therefore, the user The terminal selects a cell cell2 from the cells cell2 and cell3, then the reselection factor of the cell cell2 can be obtained from the measurement list as 0.6.

As another feasible implementation manner, after selecting cells whose measurement parameters are better than the reselection parameters from the cells under the frequencies supported by the user terminal to form a target cell set, and selecting the first cell from the target cell set, and Before acquiring the reselection factor of the first cell, the user terminal may also configure a reselection factor for each cell in the target cell set. The manner in which the network server configures the reselection factor for each frequency point in the measurement list is the same as the manner in which the user terminal configures the reselection factor for each cell in the target cell set. The following takes the user terminal as an example of configuring the reselection factor for each cell in the target cell set. The specific implementation method may be as follows:

Manner 1: On the premise of considering the cell load, the specific method for the user terminal to configure the reselection factor for each cell in the target cell set may include the following steps:

Step 11) the user terminal configures the average reselection factor for each cell in the target cell set;

Step 12) the user terminal obtains the load information of each cell in the target cell set from the network server;

Step 13) The user terminal selects the maximum load cell from the target cell set according to the load information, and reduces the average reselection factor of the maximum load cell to obtain the maximum load cell reselection factor;

Step 14) The user terminal increases the average reselection factors of the remaining cells in the target cell set except the cell with the largest load, to obtain the reselection factors of the remaining cells.

In a specific implementation, after selecting the target cell set, the user terminal may configure an average reselection factor for each cell according to the number of cells in the target cell set. Wherein, the average reselection factor is equal to the inverse of the number of cells in the target cell set. That is, the reselection factors of each cell in the target cell set are the same, and the sum of the average reselection factors of all cells is 1.

Further, the network server will acquire the load information of each cell in real time, and the user terminal may acquire the load information of each cell in the target cell set from the network server. The user terminal can obtain the load size of each cell from the load information of each cell, so as to obtain the maximum load cell. Since the initial reselection factor of each cell is the average reselection factor, after the user terminal obtains the cell with the maximum load, in order to avoid the overload of the cell with the maximum load, the average reselection factor of the cell with the maximum load can be reduced. , to get the reselection factor of the cell with the largest load. Wherein, the reselection factor of the most loaded cell is smaller than the reselection factor of any one of the remaining cells. In this way, after the user terminal selects the first cell from the set of target cells in a preset order, the possibility of the cell with the highest load being successfully camped on by the user terminal is reduced, thereby effectively reducing the load of the cell with the highest load pressure to achieve load balancing between cells.

The way that the user terminal obtains the load information of each cell in the target cell set from the network server may be that the network server broadcasts the load information of each cell to each user terminal at regular intervals; In the list, the reselection parameter is the reselection parameter of the cell, then the network server may also carry the load information of each cell in the broadcast or sent measurement list, which is not limited in this embodiment of the present invention.

It should be noted that the specific reduction of the average reselection factor of the most loaded cell may be determined in combination with the load degree of the cell and the load difference between the cells in the target cell set, which is not limited in this embodiment of the present invention. For example, if the load of a certain cell in the target cell set is much larger than the load of the rest of the cells, the reduction of the average reselection factor of this cell can be very large, even reducing the average reselection factor of this cell to 0 . The maximum load cell may include one or more cells with the largest load in the target cell set, or one or more cells in the target cell set with a load greater than a preset load, which is not limited in this embodiment of the present invention.

Further, while reducing the average reselection factor of the cell with the maximum load, the user terminal will also adjust the average reselection factor of the remaining cells in the target cell set according to the reduced reselection factor of the cell with the maximum load, so as to obtain the remaining cells. Cell reselection factor. That is, after reducing the average reselection factor of the cell with the largest load, the user terminal needs to appropriately increase the average reselection factor of the remaining cells, so that the sum of the reselection factors of all cells in the target cell set is always 1.

Optionally, after reducing the average reselection factor of the most loaded cell, the user terminal may increase the average reselection factor of the remaining cells to the same reselection factor, or may increase the average reselection factor of each of the remaining cells to the same reselection factor. The degree of adjustment of the selection factor is different, but the reselection factor of the most loaded cell is the smallest among all cells in the target cell set.

For example, assuming that the target cell set includes 5 cells, and the average reselection factor of each cell is 0.2, then when the user terminal selects the cell with the largest load among the five cells, the average re-selection factor of the cell with the largest load will be If the selection factor is reduced to 0.1, the user terminal can increase the average reselection factors of the remaining 4 cells to 0.225, or adjust the average reselection factors of the remaining 4 cells to 0.2, 0.2, 0.25, and 0.25, respectively.

Manner 2: On the premise of considering the relationship between the frequency of the cell and the frequency of the cell where the user terminal has historically resided, the specific method for the user terminal to configure the reselection factor for each cell in the target cell set may further include the following steps:

Step 21) The user terminal configures an average reselection factor for each cell in the target cell set;

Step 22) the user terminal identifies a target cell that is different from the cell where the user terminal historically resides from the set of target cells, and increases the average reselection factor of the target cell to obtain the reselection factor of the target cell;

Step 23) The user terminal reduces the average reselection factors of the remaining cells in the target cell set except the target cell to obtain the reselection factors of the remaining cells.

In a specific implementation, when the user terminal is camping on a cell, it can record the frequency points of the cell that it has historically camped on. Therefore, after selecting the target cell set, the user terminal can identify the target cell that is different from the historical camping cell from the target cell set according to the frequency points of the historical camping cells recorded by the user terminal, that is, the target cell's The frequency is different from the frequency of the cell where the user terminal historically resides. Then, on the basis that the reselection factor of each cell in the target cell set is the average reselection factor, the user terminal can increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, while reducing the remaining cells. The average reselection factor of , obtains the reselection factor of the remaining cells. The reselection factor of the target cell is greater than the reselection factor of any of the remaining cells, and the sum of the reselection factor of the target cell and the reselection factors of the remaining cells must be 1.

It should be noted that the frequency of the target cell is different from the frequency of the cell that the user terminal has historically camped on, which can be understood as: the frequency of the target cell is a frequency that the user terminal has not previously camped on in the supported frequencies.

Optionally, the user terminal can also identify the newly added frequency point of the network. If there is a cell under the newly added frequency point in the target cell set, then the user terminal can also increase the reselection factor of the cell, so that the user terminal is selecting the cell. When arriving at the cell, the success rate of camping in the cell is relatively high, so that load balancing among the cells is achieved to a certain extent.

In this way, after the user terminal selects the first cell from the set of target cells in a preset order, when a target cell that is different from the cell that the user terminal has historically camped on is selected, the possibility that the target cell is successfully camped on by the user terminal will increase, and for each user terminal, the cells that are different from the historically resident cells will also be different, so that the load balance degree between the cells can be effectively improved.

For example, the frequency points of the historical cell that the user terminal records are F3 and F4, the frequency points supported by the user terminal include F2, F3, F4, and F5, and the measurement list broadcast by the network server includes F1, F2, Reselection parameters of F3, F4, F6, F7 frequency points. Therefore, the user terminal will perform signal measurement on the cells under the F2, F3, and F4 frequency points in the measurement list. It is assumed that the cells under the F2 frequency point have cell2 and cell3, the cells under the F3 frequency point have cell4, and the cells under the F4 frequency point There is cell5. Then, the user terminal performs signal measurement on the cells of cell2, cell3, cell4, and cell5, respectively, to obtain measurement parameters corresponding to each cell. Assuming that the measurement parameters of cell2, cell3 and cell4 are respectively better than the reselection parameters of their corresponding frequency points, the cells included in the target cell set are cell2, cell3 and cell4. Therefore, the user equipment is initially configured with an average reselection factor of 1/3 for cell2, cell3 and cell4. When the user terminal recognizes that the frequency points of the cells 2 and 3 are different from those of the historically camped cells, the user terminal will increase the average reselection factors of the cells 2 and 3 to 0.4. Therefore, the average reselection factor of the cell 4 will be 0.4. reduced to 0.2. Of course, the user terminal can also increase the average reselection factor of the cell2 cell to 0.5 and the average reselection factor of the cell3 cell to 0.4, then the average reselection factor of the cell4 cell is reduced to 0.1.

Manner 3: On the premise of considering the priority of the cells, the specific mode for the user terminal to configure the reselection factor for each cell in the target cell set may further include the following steps:

Step 31) The user terminal configures an average reselection factor for each cell in the target cell set;

Step 32) The user terminal selects the highest priority cell from the target cell set, and increases the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell;

Step 33) The user terminal reduces the average reselection factors of the remaining cells in the target cell set except the highest priority cell to obtain the reselection factors of the remaining cells.

In specific implementation, when broadcasting or sending the measurement list, the network server may simultaneously broadcast or send the priority of each frequency point. Therefore, after the user terminal selects the target cell set from the cells under the supported frequencies, the user terminal can select the highest priority cell from the target cell set according to the priority. Then, on the basis that the reselection factor of each cell in the target cell set is the average reselection factor, the user terminal can appropriately increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell, And reduce the average reselection factor of the remaining cells to obtain the reselection factor of the remaining cells. Among them, the reselection factor of the highest priority cell is greater than the reselection factor of any of the remaining cells, and the sum of the reselection factor of the highest priority cell and the reselection factors of the remaining cells must be 1.

In this way, after the user terminal selects the first cell from the target cell set according to the preset order, when the highest priority cell is selected, the possibility of the highest priority cell being successfully camped on by the user terminal will be higher than that of other cells. In this way, the maximum priority principle can be followed under the premise of ensuring that the residence probability among the cells is relatively balanced, so that the load balance among the cells can be achieved to a certain extent.

It should be noted that after configuring the average reselection factor for each cell in the target cell set, the user terminal can consider any one of the cell load, the relationship between the cell frequency and the frequency of the cell where the user terminal has historically resided, and the cell priority. or several factors to adjust the average reselection factor of each cell in the target cell set.

Among them, when adjusting the average reselection factor of each cell in the target cell set according to multiple factors, the cell load can be given priority, that is, when the priority of the cell with the largest load is also the highest, the average re-selection factor of the cell can be given priority. The selection factor is reduced.

Mode 4: Under the premise of considering the cell load, the relationship between the cell frequency and the frequency of the cell that the user terminal has historically resided on, and the priority of the cell, the specific method for the user terminal to configure the reselection factor for each cell in the target cell set is also The following steps can be included:

Step 41) The user terminal configures an average reselection factor for each cell in the target cell set;

Step 42) the user terminal obtains the load information of each cell in the target cell set from the network server;

Step 43) The user terminal selects the maximum load cell from the target cell set according to the load information, and reduces the average reselection factor of the maximum load cell to obtain the maximum load cell reselection factor;

Step 44) the user terminal identifies different target cells from the set of target cells because the user terminal historically resides in different cells, and increases the average reselection factor of the target cell to obtain the reselection factor of the target cell;

Step 45) The user terminal selects the highest priority cell from the target cell set, and increases the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell;

Step 46) According to the reselection factor of the maximum load cell, the reselection factor of the target cell and the reselection factor of the highest priority cell, the user terminal adjusts the target cell set except the maximum load cell, the target cell and the highest priority cell. Average reselection factors of the remaining cells to obtain the reselection factors of the remaining cells.

In the specific implementation, after configuring the average reselection factor for each cell in the target cell set, the user terminal can reduce the average reselection factor of the cell with the largest load, and increase the average re-selection factor of the target cell that is different from the cell that the user terminal has historically camped on. Select the factor and increase the average reselection factor of the highest priority cell, and then adjust the average reselection factor of the remaining cells to obtain the reselection factors of the remaining cells. In the set of target cells adjusted by the average reselection factor, the reselection factor of the cell with the largest load is the smallest, while the reselection factors of the highest priority cell and the target cell are relatively larger than those of the remaining cells. After the user terminal selects the first cell from the set of target cells in a preset order, the probability that the cell with the largest load is successfully camped by the user terminal is small, while the possibility of the target cell and the highest priority cell being successfully camped by the user terminal is small. If the load is larger, the load can be distributed evenly among the cells, and the load balance among the cells can be improved, thereby improving the utilization rate of network resources.

It should be noted that the adjusted sum of the reselection factor of the most loaded cell, the reselection factor of the target cell, the reselection factor of the highest priority cell, and the reselection factors of the remaining cells is still 1.

Among them, when the priority of the cell with the highest load is the highest, or when the cell with the largest load is different from the cell where the user terminal historically resides, the average reselection factor of the cell with the largest load is mainly reduced, and the cell with the highest priority and the target cell can be changed from It is selected from the remaining cells in the target cell set except the cell with the largest load.

For example, assuming that the cells included in the target cell set are cell2, cell3, cell4, cell5, and cell6, respectively, then the user terminal can first configure the reselection factors of each cell in the target cell set as the average reselection factor, that is, each The reselection factors of the cells are all 0.2. When the user terminal arranges the cells in the target cell set in descending order of load, they are cell 6 > cell 3 > cell 4 > cell 2 > cell 5, and they are arranged in order of priority from high to low, respectively cell 6 > cell 2 > cell 3 > cell 5 > cell 4, and when it is identified that the cell that is different from the cell that the user terminal has historically camped on is cell 3, the user terminal can obtain the cell with the largest load as cell 6, and the cell with the highest priority is cell 6. Cells other than cell 6 are selected, that is, cell 2. Therefore, the user terminal can reduce the average reselection factor of cell 6 to 0.08, increase the average reselection factor of cell 2 to 0.3, and increase the average reselection factor of cell 3 to 0.28, then the cell The reselection factor of cell 4 and cell 5 can be reduced to 0.17 at the same time.

S305. The user terminal generates a random number for the first cell, and judges whether the random number is less than or equal to the reselection factor, and if so, perform step S306.

In this embodiment of the present invention, after obtaining the reselection factor of the cell, the user terminal can randomly generate a number (ie, a random number) in the range of 0 to 1, so that the user terminal can select the target from the target in a preset order. After the first cell is selected from the cell set, it does not directly camp on the first cell. That is to say, after the user terminal selects a certain cell, the success rate of camping on the cell is consistent with the reselection factor of the cell, so as to achieve load balance among the cells.

Specifically, when generating a random number for the first cell, the user terminal can determine whether the random number is less than or equal to the reselection factor of the first cell, and if it is less than or equal to the reselection factor, the user terminal will camp on the the first cell; if it is greater than the reselection factor, the user terminal will select a second cell from the target cell set again in a preset order, obtain the reselection factor of the second cell, and then generate a second cell for the second cell again. The random number is compared with the reselection factor of the second cell until it successfully camps on a certain cell in the target cell set.

S306, the user terminal camps on the first cell, and ends the process.

In the embodiment of the present invention, when it is determined that the random number generated by the user terminal is less than or equal to the reselection factor of the first cell, the user terminal will camp on the first cell.

It can be seen that in the method described in FIG. 3 , when the user terminal performs cell reselection, a reselection factor can be configured for each cell, and the user terminal selects a cell from the set of target cells that meet the camping conditions according to the preset order. , the success rate of each cell being camped on by the user terminal is the same as the reselection factor configured for each cell, so that the load among the cells is balanced to a certain extent, and the utilization rate of network resources is improved.

Based on the network architecture shown in FIG. 1 , another method for cell reselection is disclosed in the embodiment of the present invention. Please refer to FIG. 4. FIG. 4 is a schematic flowchart of another cell reselection method disclosed in an embodiment of the present invention. As shown in Figure 4, the cell reselection method may include the following steps:

S401. A user terminal acquires a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters.

S402. The user terminal performs signal measurement on the cells under the frequency points supported by the user terminal in the measurement list, and obtains measurement parameters corresponding to each cell that are of the same type as the reselection parameter.

S403: The user terminal selects, from the cells under the frequency point supported by the user terminal, cells whose measurement parameters are better than the reselection parameters to form a target cell set.

S404: The user terminal selects a first cell from the target cell set according to a preset order, and acquires a reselection factor of the first cell.

S405. The user terminal generates a random number for the first cell, and judges whether the random number is less than or equal to the reselection factor, if so, execute step S407; if not, execute step S406.

In this embodiment of the present invention, when the random number generated by the user terminal is less than or equal to the reselection factor of the first cell, the user terminal will directly camp on the first cell; when the random number generated by the user terminal is greater than the reselection factor of the cell When selecting the factor, the user terminal will further acquire the number of times of selecting cells from the target cell set in a preset order.

S406: The user terminal acquires the number of times of cell selection from the target cell set in a preset order, and determines whether the number of times of selection is less than the preset number of times of selection control, if so, go to step S404; if not, go to step S407.

In this embodiment of the present invention, in order to prevent the user terminal from successfully camping on a cell in the target cell set for a long time, a preset selection control number may be introduced, that is, the maximum number of operations for the user terminal to select a cell from the target cell set in a preset order . Therefore, when the user terminal selects the cells from the target cell set according to the preset order, the number of times of the selected cells is recorded. The preset selection control times may be set by the user terminal according to an empirical value, or may be set by the network server according to the number of cells in the measurement list that may satisfy the camping condition of the user terminal, which is not limited in this embodiment of the present invention. Wherein, the empirical value may specifically be a critical value obtained by the user terminal through the corresponding moving speeds when reselection ping-pong occurs and when reselection ping-pong does not occur during cell reselection in the past.

Therefore, when the random number generated by the user terminal is greater than the reselection factor of the cell, the user terminal can obtain the selection times of the selected cell, and determine whether the selection times are less than the preset selection control times.

Further, when the selection times are less than the preset selection control times, the user terminal will again select the second cell from the target cell set according to the preset order; and when the selection times are equal to the preset selection control times, the user terminal will directly camp. to the first cell.

For example, assuming that there are 6 cells in the target cell set, and the preset selection control times are set to 5, then when the user terminal selects cells from the target cell set in the order of the measurement list, if the fifth cell is selected. If the random number generated by the user terminal is greater than the reselection factor of the cell, the user terminal will directly camp on the cell.

S407, the user terminal camps on the first cell.

In this embodiment of the present invention, when the random number generated by the user terminal is less than or equal to the reselection factor of the first cell, or when the random number generated by the user terminal is greater than the reselection factor of the first cell, and the random number generated by the user terminal is greater than or equal to the reselection factor of the first cell, according to the preset order When the number of times of selecting a cell in the target cell set is equal to the preset number of times of selecting and controlling, the user terminal can directly camp on the first cell.

It can be seen that in the method described in FIG. 4 , when the user terminal performs cell reselection, when the number of times of selecting a cell is equal to the preset number of selection control times, it can directly camp on the cell, which can prevent the user terminal from being unable to operate for a long time. The situation of camping on a cell occurs, so that the user terminal can camp on a cell that satisfies the camping condition relatively quickly.

Based on the network architecture shown in FIG. 1 , another method for cell reselection is disclosed in the embodiment of the present invention. Please refer to FIG. 5. FIG. 5 is a schematic flowchart of another cell reselection method disclosed in an embodiment of the present invention. As shown in Figure 5, the cell reselection method may include the following steps:

S501. The user terminal detects the movement speed of the user terminal, and determines whether the movement speed is less than or equal to a preset movement speed threshold, if so, perform step S502; if not, end the process.

In this embodiment of the present invention, if the user terminal acquires the measurement list broadcast or sent by the network server, the user terminal must perform cell reselection according to the reselection parameters in the measurement list. However, if the user terminal obtains the measurement list broadcast or sent by the network server during the continuous movement, even if the parameters of the cell that the user terminal is currently camping on meet the camping conditions, the user terminal will continue to perform cell reselection. It occurs that the user terminal constantly switches back and forth between cells of various frequency points, thereby increasing the power consumption of the user terminal.

Therefore, before acquiring the measurement list from the network server, if the user terminal detects that it is in a moving state, it acquires its own moving speed, and determines whether the moving speed is less than or equal to the preset moving speed threshold. Wherein, the user terminal can be positioned by the positioning device to detect its moving speed.

Further, if the moving speed of the user terminal is less than or equal to the preset moving speed threshold, then the user terminal can obtain the measurement list from the network server to achieve a more uniform camping in each cell; and if the moving speed of the user terminal is greater than the preset moving speed Set the moving speed threshold, in order to avoid the user terminal performing cell reselection too frequently, or reselection ping-pong caused by camping back and forth in cells under different frequencies, the user terminal can ignore the measurement list broadcast or sent by the network server, and Cell reselection will be performed only when the signal measurement parameters of the currently camped cell are less than a certain threshold, or a cell with the same frequency as the currently camped cell will be selected for camping during cell reselection. The power consumption of the small user terminal due to frequent cell reselection when the moving speed is high.

The preset speed threshold may be configured by the network server for each user terminal, or may be set by each user terminal according to the movement speed of the user terminal when reselecting ping pong recorded in the past, which is not limited in this embodiment of the present invention.

S502. The user terminal acquires a measurement list from the network server, where the measurement list includes reselection parameters of the frequency points supported by the user terminal.

S503: The user terminal performs signal measurement for each cell under the frequency point, and obtains a measurement parameter corresponding to each cell that is of the same type as the reselection parameter.

S504: The user terminal selects, from all the cells under the frequency point, cells whose measurement parameters are better than the reselection parameters to form a target cell set.

S505, the user terminal randomly selects the first cell from the target cell set to camp on, and ends the process.

It can be seen that in the method described in FIG. 5 , when the moving speed of the user terminal is low, it can randomly camp on a cell that meets the camping conditions, or camp on a cell according to the reselection factor of each cell, and when the user terminal moves When the speed is high, in order to avoid the ping-pong of cell reselection, the user terminal can perform cell reselection only when the signal measurement parameter of the currently residing cell is less than a certain threshold, or select the cell reselection that is the same as that of the currently residing cell during cell reselection. Cells with the same frequency points can be used to avoid cell reselection ping-pong caused by the high moving speed of the user terminal, thereby reducing the power consumption of the user terminal.

Based on the network architecture shown in FIG. 1 , another method for cell reselection is disclosed in the embodiment of the present invention. Please refer to FIG. 6. FIG. 6 is a schematic flowchart of another cell reselection method disclosed in an embodiment of the present invention. As shown in Figure 6, the cell reselection method may include the following steps:

S601. A user terminal acquires a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters.

S602: The user terminal selects a first cell from the cells under the frequency points supported by the user terminal in the measurement list according to a preset order, as the current measurement cell.

In this embodiment of the present invention, the preset order may be the order of the supported frequencies (or cells under the supported frequencies) of the user terminal in the measurement list, or may be the supported frequencies (or cells under the supported frequencies) of the user terminal ) in a descending order of priorities, which is not limited in this embodiment of the present invention.

Therefore, if the network server broadcasts or sends the priority of each frequency point or cell to the user terminal, the user terminal will select the cell with the highest priority from the cells under the supported frequency points in the order of priority from high to low, so as to The cell is used as the measurement cell where the user terminal currently needs to perform signal measurement.

S603. The user terminal performs signal measurement on the measurement cell, and obtains the measurement parameter corresponding to the measurement cell with the same type as the reselection parameter.

S604. When the measurement parameter is better than the reselection parameter, the user terminal acquires the reselection factor of the measurement cell from the network server.

In this embodiment of the present invention, the network server configures a reselection factor for each adjacent cell according to information such as the coverage, cell priority, and cell load of the cell adjacent to the cell where the user terminal is located. The sum of the selection factors is 1. Or configure a reselection factor for the frequency to which each adjacent cell belongs, and the sum of the reselection factors of all frequencies is 1, then the reselection factor of the cell can be regarded as the reselection factor of the frequency to which the cell belongs. When the network server broadcasts or sends the measurement list, it can broadcast or send the frequency to which each adjacent cell belongs or the reselection factor of each adjacent cell to the user terminal.

Therefore, after the user terminal performs signal measurement on the measurement cell and obtains the measurement parameter of the measurement cell, it will further judge whether the measurement parameter is better than the measurement cell or the reselection parameter of the frequency to which the measurement cell belongs. If it is better, then Only then will the user terminal acquire the reselection factor of the measurement cell from the network server.

For example, it is assumed that the measurement list broadcast or sent by the network server to the user terminal of the current cell includes all neighboring cells cell 1, cell 2, cell 3, cell 4, cell 5, cell 6, cell 7. The cell reselection parameters of cell 8, then the network server will configure the reselection factor for each adjacent cell at the same time, assuming that the reselection factor of each adjacent cell is 0.3, 0.1, 0.07, 0.06, 0.08, 0.05, 0.2, 0.14. When the user terminal selects cell 3 from the cells in the frequency points supported by the user terminal according to the order of each cell in the measurement list, the user terminal can further obtain from the measurement list that the reselection factor of cell 3 is 0.07.

S605. The user terminal generates a random number for the measurement cell, and determines whether the random number is less than or equal to the reselection factor, if so, execute step S606; if not, execute step S602.

In this embodiment of the present invention, the random number ranges from 0 to 1, so that after the user terminal selects the measurement cell in a preset order, the success rate of camping on the measurement cell is consistent with the reselection factor of the cell , so that the number of user terminals residing in each cell is distributed according to the reselection factor configured by the network server, so as to achieve load balance among the cells.

Therefore, when the random number is less than or equal to the reselection factor of the measurement cell, the user terminal will directly camp on the measurement cell; when the random number is greater than the reselection factor of the measurement cell, the user terminal will follow the preset order. The next cell of the first cell is selected from the cells under the frequency point supported by the user terminal as the current measurement cell.

For example, it is assumed that the measurement list broadcast or sent by the network server to the user terminal of the current cell includes all neighboring cells cell 1, cell 2, cell 3, cell 4, cell 5, cell 6, cell 7. The cell reselection parameters of cell 8, then the network server will configure the reselection factor for each adjacent cell according to the load of each adjacent cell, the priority of the cell or the size of the coverage area, and all The sum of the reselection factors of adjacent cells is 1. It is assumed that the reselection factors of each adjacent cell are 0.3, 0.1, 0.07, 0.06, 0.08, 0.05, 0.2, and 0.14 respectively, and the cells corresponding to the supported frequencies obtained by the user terminal are cell 1, cell 2, cell 3, cell 4 and cell 5, then when the user terminal selects cell 1 as the measurement cell according to the order of these 5 cells in the measurement list, the user terminal can obtain the reselection factor of cell 1 as 0.3. When the number is 0.2, the user terminal can camp on cell 1, and when the random number generated by the user terminal is 0.5, the user terminal will select cell 2 as the measurement cell according to the order of the five cells in the measurement list. . That is, when the user terminal determines whether to camp on the measurement cell cell 1 by generating a random number, the probability that the cell cell 1 is successfully camped on by the user terminal is 0.3.

S606, the user terminal camps on the measurement cell.

In the embodiment of the present invention, when it is determined that the random number generated by the user terminal is less than or equal to the reselection factor of the cell, the user terminal will camp on the cell.

It can be seen that in the method described in FIG. 6, the network server can configure the configuration for each cell in combination with the load situation, priority or coverage, signal stability, access success rate, call drop rate and other factors of all adjacent cells of the current cell. The reselection factor, and after the user terminal selects a cell under the frequency point supported by the user terminal in the measurement list, the success rate of camping on the cell is the same as the reselection factor configured, thus reducing the priority to a certain extent. The load pressure of cells with higher or larger load can realize load balancing among cells and improve the utilization of network resources.

Based on the network architecture shown in FIG. 1 , an embodiment of the present invention discloses a user terminal. Please refer to FIG. 7, which is a schematic structural diagram of a user terminal disclosed in an embodiment of the present invention. As shown in FIG. 7, the user terminal 700 may include:

The obtaining module 701 is configured to obtain a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters.

In this embodiment of the present invention, the network server may broadcast the measurement list to all user terminals in the current cell, or may send the measurement list to each user terminal separately, which is not limited in the embodiment of the present invention. Therefore, the manner in which the acquiring module 701 acquires the measurement list from the web server may be broadcast by the web server, or may be sent by the web server to the user terminal 700 alone.

The same frequency is the frequency point where the current serving cell of the user terminal 700 is located, and the different frequency is the frequency point that is different from the frequency point where the current serving cell of the user terminal 700 is located. The intra-frequency and/or inter-frequency reselection parameters can be understood as frequency reselection parameters, and the frequencies in the measurement list are the frequencies where the adjacent cells of the current serving cell of the user terminal 700 are located. When one frequency point corresponds to one cell, the reselection parameters of the same frequency and/or different frequency can also be understood as the reselection parameters of the cells under each frequency point, that is, the reselection parameters of the adjacent cells of the current serving cell of the user terminal .

It should be noted that the reselection parameters included in the measurement list broadcasted by the network server or sent to the user terminal may be the reselection parameters of the frequency point where the adjacent cell of the current serving cell of the user terminal is located; The reselection parameter of the adjacent cell of the serving cell; it may also be the reselection parameter of the network standard to which the adjacent cell of the current serving cell of the user terminal belongs, such as 2G, 3G, and 4G network systems, which are not limited in this embodiment of the present invention.

The measurement module 702 is configured to perform signal measurement on the cells under the supported frequencies of the user terminal 700 in the measurement list obtained by the obtaining module 701, and obtain measurement parameters corresponding to each cell of the same type as the reselection parameter.

The selecting module 703 is configured to select cells whose measurement parameters are better than the reselection parameters from the cells at the frequencies supported by the user terminal 700 in the measurement list obtained by the obtaining module 701 to form a target cell set.

The camping module 704 is configured to select the first cell from the set of target cells selected by the selecting module 703 to camp on.

As a feasible implementation manner, the specific manner in which the camping module 704 selects the first cell from the target cell set to camp on may be:

A first cell is randomly selected from the target cell set and camped on the first cell.

Please refer to FIG. 8 together. FIG. 8 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention. The user terminal 700 shown in FIG. 8 is optimized on the basis of the user terminal 700 shown in FIG. 7 . As shown in FIG. 8, the user terminal 700 may further include a detection module 705 and a judgment module 706, wherein:

The detection module 705 is used to detect the moving speed of the user terminal 700 .

The judging module 706 is configured to judge whether the moving speed is less than or equal to the preset moving speed threshold, and if so, trigger the obtaining module 701 to execute the operation of obtaining the measurement list from the network server.

In this embodiment of the present invention, if the judging module 706 judges that the moving speed is greater than the preset moving speed threshold, in order to avoid the user terminal 700 performing cell reselection too frequently, or camping back and forth in cells at different frequencies In reselection ping-pong, the user terminal 700 can ignore the measurement list broadcast or sent by the network server, and perform cell reselection only when the signal measurement parameter of the currently residing cell is less than a certain threshold, or when performing cell reselection A cell with the same frequency as the currently camping cell is selected for camping, which can reduce the power consumption of the user terminal 700 due to frequent cell reselection when the moving speed is high.

As a feasible implementation manner, the resident module 704 may include a selection sub-module 7041, an acquisition sub-module 7042, a judgment sub-module 7043, and a resident sub-module 7044, wherein:

The selection sub-module 7041 is configured to select the first cell from the set of target cells selected by the selection module 703 in a preset order.

The obtaining submodule 7042 is configured to obtain the reselection factor of the first cell.

The obtaining sub-module 7042 may obtain the reselection factor of the first cell locally from the user terminal 700, or obtain the reselection factor of the first cell from the network server.

The judging submodule 7043 is used to generate a random number for the first cell, and determine whether the random number is less than or equal to the reselection factor, if so, trigger the camping submodule 7044 to camp on the first cell; if not, The trigger selection sub-module 7041 selects the second cell from the target cell set again according to the preset sequence. The random number ranges from 0 to 1.

The camping sub-module 7044 is configured to camp on the first cell when the determining sub-module 7043 determines that the random number is less than or equal to the reselection factor of the cell.

As another feasible implementation manner, the acquisition sub-module 7042 is further configured to, when the determination sub-module 7043 determines that the random number is greater than the reselection factor, the acquisition and selection sub-module 7041 selects cells from the target cell set in a preset order of selections.

The determination sub-module 7043 is further configured to determine whether the selection times are less than the preset selection control times, if so, trigger the selection sub-module 7041 to select the second cell from the target cell set again according to the preset order; if not, trigger the dwell Sub-module 7044 camps on the operation of the first cell.

As another feasible implementation manner, the measurement list obtained by the user terminal from the network server may also include the reselection factor of each frequency point, then the specific manner in which the obtaining sub-module 7042 obtains the reselection factor of the first cell may be:

The reselection factor of the frequency point where the first cell is located is obtained from the measurement list.

In this embodiment of the present invention, after the adjustment module 708 adjusts the reselection factors of each cell in the target cell set, the obtaining submodule 7041 in the camping module 704 can obtain the reselection factors of the currently selected cell from the adjustment module 708 .

Please refer to FIG. 9 together. FIG. 9 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention. The user terminal 700 shown in FIG. 9 is optimized on the basis of the user terminal 700 shown in FIG. 8 . As shown in FIG. 9, the user terminal 700 may further include a configuration module 707 and an adjustment module 708, wherein:

The configuration module 707 is configured to configure an average reselection factor for each cell in the target cell set after the selection module 703 selects a target cell set whose measurement parameter is better than the reselection parameter from the cells at the frequencies supported by the user terminal 700 . Wherein, the average reselection factor is equal to the inverse of the number of cells in the target cell set.

When considering the cell load in the target cell set:

The obtaining module 701 is further configured to obtain the load information of each cell in the target cell set from the network server.

The selecting module 703 is further configured to select the maximum load cell from the target cell set according to the load information obtained by the obtaining module 701 .

Adjustment module 708, configured to reduce the average reselection factor of the cell with the highest load, obtain the reselection factor of the cell with the highest load, and increase the average reselection factor of the remaining cells in the target cell set except the cell with the highest load , get the reselection factors of the remaining cells. The sum of the reselection factor of the maximum load cell and the reselection factors of other cells is 1.

As a feasible implementation manner, when considering the priority of cells in the target cell set:

The selecting module 703 is further configured to select the highest priority cell from the target cell set.

The adjustment module 708 is further configured to increase the average reselection factor of the highest-priority cell, obtain the reselection factor of the highest-priority cell, and reduce the remaining cells in the target cell set except the highest-priority cell The average reselection factor of , obtains the reselection factor of the remaining cells. The sum of the reselection factor of the highest priority cell and the reselection factors of other cells is 1.

In this embodiment of the present invention, after the adjustment module 708 adjusts the reselection factors of each cell in the target cell set, the obtaining sub-module 7042 in the camping module 704 can obtain the reselection of the currently selected cell from the adjustment module 708 factor.

Please refer to FIG. 10 together. FIG. 10 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention. The user terminal 700 shown in FIG. 10 is optimized on the basis of the user terminal 700 shown in FIG. 8 and FIG. 9 . As shown in FIG. 10, the user terminal 700 may further include an identification module 709, wherein:

The configuration module 707 is configured to configure an average reselection factor for each cell in the target cell set after the selection module 703 selects a target cell set whose measurement parameter is better than the reselection parameter from all cells in the supported frequency points of the user terminal 700 . Wherein, the average reselection factor is equal to the inverse of the number of cells in the target cell set.

The identifying module 709 is configured to identify, from the set of target cells selected by the selecting module 703, a target cell that is different from the cell that the user terminal 700 has historically camped on. The frequency of the target cell is different from the frequency of the cell where the user terminal 700 has historically camped.

It should be noted that the frequency of the target cell is different from the frequency of the cell where the user terminal 700 resides in the past, which can be understood as: the frequency of the target cell is the newly added frequency of the user terminal 700 .

Optionally, the identification module 709 can also identify the newly added frequency of the network. If there is a cell under the newly added frequency in the target cell set, then the adjustment module 708 can also increase the reselection factor of the cell so as to camp on. When the module 704 selects the cell, the success rate of camping on the cell is relatively high, so as to achieve load balance among the cells to a certain extent.

The adjustment module 708 is further configured to increase the average reselection factor of the target cell, obtain the reselection factor of the target cell, and reduce the average reselection factor of the remaining cells in the target cell set except the target cell, Get the reselection factors of the remaining cells. The sum of the reselection factor of the target cell and the reselection factors of other cells is 1.

In this embodiment of the present invention, after the adjustment module 708 adjusts the reselection factors of each cell in the target cell set, the obtaining sub-module 7042 in the camping module 704 can obtain the reselection of the currently selected cell from the adjustment module 708 factor.

Please refer to FIG. 11 together. FIG. 11 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention. The user terminal 700 shown in FIG. 11 is optimized on the basis of the user terminal 700 shown in FIG. 8 , FIG. 9 and FIG. 10 . As shown in FIG. 11 , when considering the cell load in the target cell set, the relationship with the frequency of the cell where the user terminal 700 historically resides, and the cell priority:

The configuration module 707 is configured to configure an average reselection factor for each cell in the target cell set after the selection module 703 selects a target cell set whose measurement parameter is better than the reselection parameter from all cells under the supported frequencies of the user terminal. Wherein, the average reselection factor is equal to the inverse of the number of cells in the target cell set.

The obtaining module 701 is further configured to obtain the load information of each cell in the target cell set from the network server.

The selecting module 703 is further configured to select the most loaded cell from the target cell set according to the load information obtained by the obtaining module 701, and select the highest priority cell from the target cell set.

The identifying module 709 is configured to identify, from the set of target cells selected by the selecting module 703, a target cell that is different from the cell that the user terminal has historically camped on. The frequency of the target cell is different from the frequency of the cell where the user terminal 700 has historically camped.

The adjustment module 708 is further configured to reduce the average reselection factor of the maximum load cell, obtain the reselection factor of the maximum load cell, increase the average reselection factor of the target cell, obtain the reselection factor of the target cell, and increase the reselection factor of the target cell. Increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell, and adjust it according to the reselection factor of the maximum load cell, the reselection factor of the target cell and the reselection factor of the highest priority cell The average reselection factors of the remaining cells in the target cell set except the maximum load cell, the target cell and the highest priority cell are used to obtain the reselection factors of the remaining cells. The sum of the reselection factor of the most loaded cell, the reselection factor of the target cell, the reselection factor of the highest priority cell, and the reselection factors of the remaining cells is still 1.

In this embodiment of the present invention, after the adjustment module 708 adjusts the reselection factors of each cell in the target cell set, the obtaining sub-module 7042 in the camping module 704 can obtain the reselection of the currently selected cell from the adjustment module 708 factor.

It can be seen that, in the user terminals described in FIGS. 7 to 11 , when the user terminal performs cell reselection, a reselection factor can be configured for each cell, and the user terminal is in the set of target cells that satisfy the camping conditions in a preset order. When a cell is selected, the success rate of each cell being camped on by the user terminal is the same as the reselection factor configured for each cell. The load among the cells is balanced to a certain extent, and the utilization rate of network resources is improved. Further, when the user terminal performs cell reselection, when the number of times of selecting a cell is equal to the preset number of selection control times, it can directly camp on the cell, which can prevent the user terminal from being unable to camp on the cell for a long time. Therefore, the user terminal can quickly camp on a cell that satisfies the camping condition. At the same time, when the moving speed of the user terminal is low, it can randomly camp on a cell that meets the camping conditions, or camp on the cell according to the reselection factor of each cell. With ping-pong, the user terminal can perform cell reselection only when the signal measurement parameter of the cell it is currently camping on is less than a certain threshold, or select a cell with the same frequency as the currently camping cell when performing cell reselection. The cell reselection ping-pong caused by the high moving speed of the user terminal reduces the power consumption of the user terminal.

Based on the network architecture shown in FIG. 1 , another user terminal is disclosed in an embodiment of the present invention. Please refer to FIG. 12. FIG. 12 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention. As shown in FIG. 12, the user terminal 120 may include: at least one processor 121, such as a CPU, a communication interface 122, a memory 123, and at least one communication bus 124, and the memory 123 may be a high-speed RAM memory or a non-volatile memory (non-volatile memory), such as at least one disk storage, optionally, the memory 123 may also be at least one storage device located far from the aforementioned processor 121 . in:

The communication bus 124 is used to realize the connection and communication among these components such as the processor 121 , the communication interface 122 and the memory 123 .

A set of program codes are stored in the memory 121, and the processor 121 is used to call the program codes stored in the memory 123 to perform the following operations:

The measurement list is obtained from the network server through the communication interface 122, wherein the measurement list includes the reselection parameters of the same frequency and/or the different frequency, the same frequency is the frequency point where the current serving cell of the user terminal 120 is located, and the different frequency is the same frequency as the user terminal. 120 different frequency points where the current serving cell is located;

Perform signal measurement on the cells under the frequency points supported by the user terminal 120 in the measurement list, and obtain measurement parameters corresponding to each cell that are of the same type as the reselection parameter;

From the cells under the supported frequencies of the user terminal 120, select cells whose measurement parameters are better than the reselection parameters to form a target cell set;

The first cell is selected from the set of target cells to camp on.

Optionally, the specific manner in which the processor 121 selects the first cell from the target cell set to camp on may be:

A first cell is randomly selected from the target cell set and camped on the first cell.

Optionally, the specific manner in which the processor 121 selects the first cell from the target cell set to camp on may also be:

According to a preset order, select a first cell from the target cell set, and obtain a reselection factor of the first cell;

Generate a random number for the first cell, and determine whether the random number is less than or equal to the reselection factor, where the random number ranges from 0 to 1;

When the random number is less than or equal to the reselection factor, camp on the first cell.

Optionally, the processor 121 is further configured to call the program code stored in the memory 123 to perform the following operations:

When the random number is greater than the reselection factor, acquiring the number of times of selecting cells from the target cell set in a preset order;

Determine whether the selection times are less than the preset selection control times;

When the selection times are less than the preset selection control times, select a second cell from the target cell set again according to a preset order, and acquire a reselection factor of the second cell;

When the selection times is equal to the preset selection control times, camp on the first cell.

In the embodiment of the present invention, the reselection factor may be configured by the network server or configured by the user terminal 120, which is not limited in the embodiment of the present invention.

Optionally, when the reselection factor is configured by the network server, the measurement list obtained by the processor 121 from the network server through the communication interface 122 may also include intra-frequency and/or inter-frequency reselection factors. Therefore, the processor 121 The specific manner of obtaining the reselection factor of the first cell may be as follows:

The reselection factor of the frequency point where the first cell is located is obtained from the measurement list.

As a feasible implementation manner, when considering the cell load in the target cell set, the processor 121 is further configured to call the memory before selecting the first cell from the target cell set and acquiring the reselection factor of the first cell The program code stored in 123 does the following:

Configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Obtain the load information of each cell in the target cell set from the network server through the communication interface 122;

According to the load information, the maximum load cell is selected from the target cell set, and the average reselection factor of the maximum load cell is reduced to obtain the reselection factor of the maximum load cell;

And, increase the average reselection factor of the remaining cells in the target cell set except the most loaded cell to obtain the reselection factor of the remaining cells, where the sum of the reselection factor of the maximum loaded cell and the reselection factor of the remaining cells is 1.

As another feasible implementation manner, when considering the relationship between the cell frequency in the target cell set and the frequency of the cell where the user terminal 120 has historically camped on, the processor 121 selects the first cell from the target cell set in a preset order. , and before acquiring the reselection factor of the first cell, it is also used to call the program code stored in the memory 123 to perform the following operations:

Configure an average reselection factor for each cell in the target cell set, where the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Identify the target cell that is different from the cell that the user terminal 120 has historically camped on from the set of target cells, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, where the frequency of the target cell is the same as that of the target cell. The frequency points of the cells where the user terminal 120 historically resides are different;

And, the average reselection factor of the remaining cells in the target cell set except the target cell is reduced to obtain the reselection factor of the remaining cells, wherein the sum of the reselection factor of the target cell and the reselection factor of the remaining cells is 1.

It should be noted that the frequency of the target cell is different from the frequency of the cell where the user terminal 120 resides in the past, which can be understood as: the frequency of the target cell is the newly added frequency of the user terminal 120 .

Optionally, the processor 121 may also identify the newly added frequency point of the network, and if there is a cell under the newly added frequency point in the target cell set, the processor 121 may also increase the reselection factor of the cell, so that the processor 121 When the cell is selected, the success rate of camping on the cell is relatively high, so as to achieve load balance among the cells to a certain extent.

As another feasible implementation manner, when considering the priority of the cells in the target cell set, the processor 121 selects the first cell from the target cell set according to a preset order and obtains the reselection factor of the first cell , is also used to call the program code stored in the memory 123 to perform the following operations:

Configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Select the highest priority cell from the target cell set, and increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell;

And, reduce the average reselection factor of the remaining cells except the highest priority cell in the target cell set to obtain the reselection factor of the remaining cells, wherein the reselection factor of the highest priority cell and the reselection factor of the remaining cells and is 1.

As another feasible implementation manner, when simultaneously considering the cell load in the target cell set, the relationship between the cell frequency and the frequency of the cell that the user terminal 120 has historically camped on, and the priority of the cell, the processor 121 starts from the preset order. Before selecting the first cell in the target cell set and obtaining the reselection factor of the first cell, it is also used to call the program code stored in the memory 123, and perform the following operations:

Configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Obtain the load information of each cell in the target cell set from the network server through the communication interface 122;

According to the load information, the maximum load cell is selected from the target cell set, and the average reselection factor of the maximum load cell is reduced to obtain the reselection factor of the maximum load cell;

Identify the target cell that is different from the cell that the user terminal 120 has historically camped on from the target cell set, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, where the frequency of the target cell is the same as that of the target cell. The frequency points of the cells where the user terminal 120 historically resides are different;

Select the highest priority cell from the target cell set, and increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell;

According to the reselection factor of the most loaded cell, the reselection factor of the target cell and the reselection factor of the highest priority cell, adjust the average of the remaining cells in the set of target cells except the most loaded cell, the target cell and the highest priority cell The reselection factor is obtained to obtain the reselection factors of the remaining cells, wherein the sum of the reselection factor of the most loaded cell, the reselection factor of the target cell, the reselection factor of the highest priority cell and the reselection factors of the remaining cells is 1.

As another feasible implementation manner, the processor 121 is further configured to call the program code stored in the memory 123 to perform the following operations:

Detecting the movement speed of the user terminal 120, and judging whether the movement speed is less than or equal to a preset movement speed threshold;

When the moving speed is less than or equal to the preset moving speed threshold, the operation of acquiring the measurement list from the network server through the communication interface 122 is performed.

In this embodiment of the present invention, if it is determined that the moving speed is greater than the preset moving speed threshold, in order to avoid the user terminal 120 performing cell reselection too frequently, or reselection ping-pong caused by camping back and forth in cells under different frequencies , the user terminal 120 may ignore the measurement list broadcast or sent by the network server, and perform cell reselection only when the signal measurement parameter of the currently residing cell is less than a certain threshold, or select the same The camping is performed on a cell with the same frequency of the camping cell, which can reduce the power consumption of the user terminal 120 due to frequent cell reselection when the moving speed is high.

It can be seen that in the user terminal described in FIG. 12 , when the user terminal performs cell reselection, a reselection factor can be configured for each cell, and the user terminal selects a cell from the set of target cells that meet the camping conditions in a preset order. When , the success rate of each cell being camped on by the user terminal is the same as the reselection factor configured for each cell. The load among the cells is balanced to a certain extent, and the utilization rate of network resources is improved. Further, when the user terminal performs cell reselection, when the number of times of selecting a cell is equal to the preset number of selection control times, it can directly camp on the cell, which can prevent the user terminal from being unable to camp on the cell for a long time. Therefore, the user terminal can quickly camp on a cell that satisfies the camping condition. At the same time, when the moving speed of the user terminal is low, it can randomly camp on a cell that meets the camping conditions, or camp on the cell according to the reselection factor of each cell. With ping-pong, the user terminal can perform cell reselection only when the signal measurement parameter of the cell it is currently camping on is less than a certain threshold, or select a cell with the same frequency as the currently camping cell when performing cell reselection. The cell reselection ping-pong caused by the high moving speed of the user terminal reduces the power consumption of the user terminal.

Based on the network architecture shown in FIG. 1 , another user terminal is disclosed in an embodiment of the present invention. Please refer to FIG. 13. FIG. 13 is a schematic structural diagram of another user terminal disclosed in an embodiment of the present invention. As shown in FIG. 13, the user terminal 130 may include a receiver 131, at least one processor 132, such as a CPU, and at least one bus 133, wherein:

The bus 133 may be a communication bus, which is used to implement a communication connection between the receiver 131 and the processor 132, which is not limited in this embodiment of the present invention.

The receiver 131 is configured to receive a measurement list from the network server, wherein the measurement list includes reselection parameters of intra-frequency and/or inter-frequency, the same frequency is the frequency point where the current serving cell of the user terminal 130 is located, and the inter-frequency is the same frequency as the user terminal 130. The terminal 130 is currently serving a different frequency of the cell where the cell is located.

The processor 132 is configured to perform signal measurement on the cells under the frequency points supported by the user terminal 130 in the measurement list, and obtain measurement parameters corresponding to each cell that are of the same type as the reselection parameter; from the cells under the frequency points supported by the user terminal 130 , select cells whose measurement parameters are better than reselection parameters to form a target cell set; select a first cell from the target cell set to camp on.

As a feasible implementation manner, the specific manner in which the processor 132 selects the first cell from the target cell set to camp on may be:

A first cell is randomly selected from the target cell set and camped on the first cell.

As another feasible implementation manner, the specific manner in which the processor 132 selects the first cell from the target cell set to camp on may be:

According to a preset order, select a first cell from the target cell set, and obtain a reselection factor of the first cell;

Generate a random number for the first cell, and determine whether the random number is less than or equal to the reselection factor, where the random number ranges from 0 to 1;

When the random number is less than or equal to the reselection factor, camp on the first cell.

As another feasible implementation manner, the processor 132 may also be configured to perform the following operations:

When the random number is greater than the reselection factor, acquiring the number of times of selecting cells from the target cell set in a preset order;

Determine whether the selection times are less than the preset selection control times;

When the selection times are less than the preset selection control times, select a second cell from the target cell set again according to a preset order, and acquire a reselection factor of the second cell;

When the selection times is equal to the preset selection control times, camp on the first cell.

In this embodiment of the present invention, the reselection factor may be configured by the network server or configured by the user terminal 130, which is not limited in the embodiment of the present invention.

Optionally, when the reselection factor is configured by the network server, the measurement list received by the receiver 131 from the network server may also include intra-frequency and/or inter-frequency reselection factors. Therefore, the processor 132 obtains the first The specific method of the reselection factor of the cell can be as follows:

The reselection factor of the frequency point where the first cell is located is obtained from the measurement list.

In some feasible implementations, when considering the cell load in the target cell set, the processor 132 may also be used to execute the first cell from the target cell set and before acquiring the reselection factor of the first cell. Do the following:

Configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Obtain the load information of each cell in the target cell set from the network server;

According to the load information, the maximum load cell is selected from the target cell set, and the average reselection factor of the maximum load cell is reduced to obtain the reselection factor of the maximum load cell;

And, increase the average reselection factor of the remaining cells in the target cell set except the most loaded cell to obtain the reselection factor of the remaining cells, where the sum of the reselection factor of the maximum loaded cell and the reselection factor of the remaining cells is 1.

In a specific implementation, the specific manner in which the processor 132 obtains the load information of each cell in the target cell set from the network server may be as follows: the processor 132 controls the receiver 131 to receive the load information of each cell in the target cell set from the network server.

In some feasible implementations, when considering the relationship between the cell frequencies in the target cell set and the frequency of the cell where the user terminal 130 has historically camped, the processor 132 selects the first cell from the target cell set in a preset order, And before obtaining the reselection factor of the first cell, it can also be used to perform the following operations:

Configure an average reselection factor for each cell in the target cell set, where the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Identify the target cell that is different from the cell that the user terminal 130 has historically camped on from the set of target cells, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, where the frequency of the target cell is the same as that of the target cell. The frequency points of the cells where the user terminal 130 historically resides are different;

And, the average reselection factor of the remaining cells in the target cell set except the target cell is reduced to obtain the reselection factor of the remaining cells, wherein the sum of the reselection factor of the target cell and the reselection factor of the remaining cells is 1.

It should be noted that the frequency of the target cell is different from the frequency of the cell where the user terminal 130 resides in the past, which can be understood as: the frequency of the target cell is the newly added frequency of the user terminal 130 .

Optionally, the processor 132 may also identify the newly added frequency point of the network, and if there is a cell under the newly added frequency point in the target cell set, the processor 132 may also increase the reselection factor of the cell, so that the processor 132 When the cell is selected, the success rate of camping on the cell is relatively high, so as to achieve load balance among the cells to a certain extent.

In some feasible implementations, when considering the priority of the cells in the target cell set, the processor 132 selects the first cell from the target cell set according to a preset order and obtains the reselection factor of the first cell, Can also be used to do the following:

Configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Select the highest priority cell from the target cell set, and increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell;

And, reduce the average reselection factor of the remaining cells except the highest priority cell in the target cell set to obtain the reselection factor of the remaining cells, wherein the reselection factor of the highest priority cell and the reselection factor of the remaining cells and is 1.

In some possible implementations, when simultaneously considering the cell load in the target cell set, the relationship between the cell frequency and the frequency of the cell where the user terminal 130 has historically camped on, and the cell priority, the processor 132 starts the target cell from the target in a preset order. Before selecting the first cell from the cell set and obtaining the reselection factor of the first cell, it can also be used to perform the following operations:

Configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set;

Obtain the load information of each cell in the target cell set from the network server;

According to the load information, the maximum load cell is selected from the target cell set, and the average reselection factor of the maximum load cell is reduced to obtain the reselection factor of the maximum load cell;

Identify the target cell that is different from the cell that the user terminal 130 has historically camped on from the target cell set, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell. The frequency points of the cells where the user terminal 130 historically resides are different;

Select the highest priority cell from the target cell set, and increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell;

According to the reselection factor of the most loaded cell, the reselection factor of the target cell and the reselection factor of the highest priority cell, adjust the average of the remaining cells in the set of target cells except the most loaded cell, the target cell and the highest priority cell The reselection factor is obtained to obtain the reselection factors of the remaining cells, wherein the sum of the reselection factor of the most loaded cell, the reselection factor of the target cell, the reselection factor of the highest priority cell and the reselection factors of the remaining cells is 1.

In some possible implementations, the processor 132 may also be configured to perform the following operations:

Detecting the moving speed of the user terminal 130, and judging whether the moving speed is less than or equal to a preset moving speed threshold;

When the moving speed is less than or equal to the preset moving speed threshold, the receiver 131 is triggered to perform an operation of receiving the measurement list from the network server.

It can be seen that, in the user terminal described in FIG. 13 , when the user terminal performs cell reselection, a reselection factor can be configured for each cell, and the user terminal selects a cell from the set of target cells that meet the camping conditions in a preset order. When , the success rate of each cell being camped on by the user terminal is the same as the reselection factor configured for each cell. The load among the cells is balanced to a certain extent, and the utilization rate of network resources is improved. Further, when the user terminal performs cell reselection, when the number of times of selecting a cell is equal to the preset number of selection control times, it can directly camp on the cell, which can prevent the user terminal from being unable to camp on the cell for a long time. Therefore, the user terminal can quickly camp on a cell that satisfies the camping condition. At the same time, when the moving speed of the user terminal is low, it can randomly camp on a cell that meets the camping conditions, or camp on the cell according to the reselection factor of each cell. With ping-pong, the user terminal can perform cell reselection only when the signal measurement parameter of the cell it is currently camping on is less than a certain threshold, or select a cell with the same frequency as the currently camping cell when performing cell reselection. The cell reselection ping-pong caused by the high moving speed of the user terminal reduces the power consumption of the user terminal.

It should be noted that, in the foregoing embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

The steps in the method of the embodiment of the present invention may be adjusted, combined and deleted in sequence according to actual needs.

The modules in the user terminal in the embodiment of the present invention may be combined, divided and deleted according to actual needs.

The modules in the embodiments of the present invention may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit, central processing unit), or an ASIC (Application Specific Integrated Circuit, an application-specific integrated circuit).

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and the program is During execution, it may include the processes of the embodiments of the above-mentioned methods. The storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM) or the like.

A cell reselection method and a user terminal disclosed in the embodiments of the present invention are described above in detail. The principles and implementations of the present invention are described in this document by using specific examples. The descriptions of the above embodiments are only used to help understand the present invention. and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. To sum up, the contents of this specification should not be construed as a limits.

Claims (28)

1. a cell reselection method, is characterized in that, comprises: Acquire a measurement list from the network server, where the measurement list includes reselection parameters of intra-frequency and/or inter-frequency, the intra-frequency is the frequency of the current serving cell of the user terminal, and the inter-frequency is the same frequency as the current serving cell of the user terminal The frequency points where the serving cell is located are different; performing signal measurement on the cells under the frequency points supported by the user terminal in the measurement list, to obtain measurement parameters corresponding to each cell that are of the same type as the reselection parameter; From the cells at the frequencies supported by the user terminal, select cells whose measurement parameters are better than the reselection parameters to form a target cell set; Select a first cell from the set of target cells to camp on; The selecting the first cell from the set of target cells to camp on includes: selecting the first cell from the set of target cells according to a preset order, and obtaining the reset value of the first cell. select factor; generate a random number for the first cell, and judge whether the random number is less than or equal to the reselection factor; when the random number is less than or equal to the reselection factor, stay in the first district. 2. The method according to claim 1, wherein the selecting the first cell from the target cell set to camp on further comprises: The first cell is randomly selected from the target cell set, and camps on the first cell. 3 . The method according to claim 1 , wherein the random number ranges from 0 to 1. 4 . 4. The method according to claim 3, wherein the method further comprises: When the random number is greater than the reselection factor, acquiring the number of times of selecting cells from the target cell set according to the preset order; Determine whether the selection times are less than or equal to the preset selection control times; When the selection times are less than the preset selection control times, select a second cell from the target cell set again according to the preset order, and obtain a reselection factor of the second cell; When the selection times is equal to the preset selection control times, camp on the first cell. 5. The method according to claim 1, 3 or 4, wherein the first cell is selected from the set of target cells according to the preset order, and the weight of the first cell is obtained. Before selecting factors, the method further includes: configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; Obtain load information of each cell in the target cell set from the network server; Select the most loaded cell from the set of target cells according to the load information, and reduce the average reselection factor of the most loaded cell to obtain the reselection factor of the most loaded cell; and, increasing the average reselection factors of the remaining cells in the target cell set except the most loaded cell to obtain the reselection factors of the remaining cells, wherein the reselection factor of the most loaded cell is the same as the The sum of the reselection factors of the remaining cells is 1. 6. The method according to claim 1, 3 or 4, wherein the first cell is selected from the set of target cells according to the preset order, and the weight of the first cell is obtained. Before selecting factors, the method further includes: configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; Identify a target cell that is different from the historically camped cell of the user terminal from the target cell set, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, wherein the The frequency of the target cell is different from the frequency of the cell where the user terminal historically resides; and, reducing the average reselection factor of the remaining cells in the target cell set except the target cell to obtain the reselection factor of the remaining cells, wherein the reselection factor of the target cell is the same as the remaining cell reselection factor The sum of the reselection factors of the cells is 1. 7. The method according to claim 1, 3 or 4, wherein the first cell is selected from the set of target cells according to the preset order, and the weight of the first cell is obtained. Before selecting factors, the method further includes: configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; Select the highest priority cell from the target cell set, and increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell; and, reducing the average reselection factor of the remaining cells in the target cell set except the highest priority cell to obtain the reselection factor of the remaining cells, wherein the reselection factor of the highest priority cell The sum of the reselection factors with the remaining cells is 1. 8. The method according to claim 1, 3 or 4, wherein the first cell is selected from the set of target cells according to the preset order, and the weight of the first cell is obtained. Before selecting factors, the method further includes: configuring an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; Obtain load information of each cell in the target cell set from the network server; Select the most loaded cell from the set of target cells according to the load information, and reduce the average reselection factor of the most loaded cell to obtain the reselection factor of the most loaded cell; Identify a target cell that is different from the historically camped cell of the user terminal from the target cell set, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, wherein the The frequency of the target cell is different from the frequency of the cell where the user terminal historically resides; Select the highest priority cell from the target cell set, and increase the average reselection factor of the highest priority cell to obtain the reselection factor of the highest priority cell; According to the reselection factor of the most loaded cell, the reselection factor of the target cell and the reselection factor of the highest priority cell, adjust the set of target cells except the most loaded cell, the target cell and the the average reselection factors of the remaining cells other than the highest priority cell to obtain the reselection factors of the remaining cells, wherein the reselection factors of the most loaded cell, the reselection factors of the target cell and the The sum of the reselection factor of the highest priority cell and the reselection factors of the remaining cells is 1. 9. The method according to claim 1, 3 or 4, wherein the measurement list further includes the intra-frequency and/or inter-frequency reselection factors, and the acquisition of the first cell's Reselection factors, including: The reselection factor of the frequency point where the first cell is located is obtained from the measurement list. 10. A user terminal, comprising: an acquisition module, configured to acquire a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters, the intra-frequency is the frequency point where the current serving cell of the user terminal is located, and the inter-frequency is a frequency point different from the frequency point where the current serving cell of the user terminal is located; a measurement module, configured to perform signal measurement on the cells under the supported frequencies of the user terminal in the measurement list, and obtain measurement parameters corresponding to each cell that are of the same type as the reselection parameter; A selection module, configured to select cells whose measurement parameters are better than the reselection parameters from cells under the supported frequencies of the user terminal to form a target cell set; A camping module, configured to select a first cell from the set of target cells for camping; The resident module includes a selection sub-module, an acquisition sub-module, a judgment sub-module and a resident sub-module, wherein: the selection submodule, configured to select the first cell from the target cell set according to a preset order; the obtaining submodule, configured to obtain the reselection factor of the first cell; The judging submodule is used for generating a random number for the first cell, and judging whether the random number is less than or equal to the reselection factor; The camping submodule is configured to camp on the first cell when the judging submodule determines that the random number is less than or equal to the reselection factor. 11. The user terminal according to claim 10, wherein the specific manner in which the camping module selects the first cell from the target cell set for camping is: The first cell is randomly selected from the target cell set, and camps on the first cell. 12 . The user terminal according to claim 10 , wherein the random number ranges from 0 to 1. 13 . 13. The user terminal according to claim 12, wherein, The acquisition submodule is further configured to, when the determination submodule determines that the random number is greater than the reselection factor, acquire the selection submodule to select cells from the target cell set according to the preset order number of selections; The judging submodule is further configured to judge whether the selection times are less than the preset selection control times, and if so, trigger the selection submodule to select a second cell from the target cell set again according to the preset order; If not, trigger the camping submodule to camp on the first cell. 14. The user terminal according to claim 10 or 12 or 13, wherein the user terminal further comprises: a configuration module, configured to configure an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; The obtaining module is further configured to obtain the load information of each cell in the target cell set from the network server; The selection module is further configured to select the maximum load cell from the target cell set according to the load information; The user terminal also includes: An adjustment module, configured to reduce the average reselection factor of the maximum load cell, obtain the reselection factor of the maximum load cell, and increase the reselection factor of the remaining cells in the target cell set except the maximum load cell The reselection factors of the remaining cells are obtained by averaging the reselection factors, wherein the sum of the reselection factors of the most loaded cell and the reselection factors of the remaining cells is 1. 15. The user terminal according to claim 10 or 12 or 13, wherein the user terminal further comprises: a configuration module, configured to configure an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; An identification module, configured to identify, from the set of target cells, a target cell that is different from the cell that the user terminal has historically camped on, wherein the frequency of the target cell is different from the frequency of the cell that the user terminal has historically camped on ; an adjustment module, configured to increase the average reselection factor of the target cell, obtain the reselection factor of the target cell, and reduce the average reselection factor of the remaining cells in the set of target cells except the target cell factor to obtain the reselection factors of the remaining cells, wherein the sum of the reselection factors of the target cell and the reselection factors of the remaining cells is 1. 16. The user terminal according to claim 10 or 12 or 13, wherein the user terminal further comprises: a configuration module, configured to configure an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; The selecting module is further configured to select the highest priority cell from the target cell set; The user terminal also includes: an adjustment module, configured to increase the average reselection factor of the highest priority cell, obtain the reselection factor of the highest priority cell, and reduce the target cell set except the highest priority cell The average reselection factors of the remaining cells are used to obtain the reselection factors of the remaining cells, wherein the sum of the reselection factors of the highest priority cell and the reselection factors of the remaining cells is 1. 17. The user terminal according to claim 10, 12 or 13, wherein the user terminal further comprises: a configuration module, configured to configure an average reselection factor for each cell in the target cell set, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; The obtaining module is further configured to obtain the load information of each cell in the target cell set from the network server; The selecting module is further configured to select the maximum load cell from the target cell set according to the load information, and select the highest priority cell from the target cell set; The user terminal also includes: An identification module, configured to identify, from the set of target cells, a target cell that is different from the cell that the user terminal has historically camped on, wherein the frequency of the target cell is different from the frequency of the cell that the user terminal has historically camped on ; an adjustment module, configured to reduce the average reselection factor of the maximum load cell, obtain the reselection factor of the maximum load cell, increase the average reselection factor of the target cell, and obtain the reselection factor of the target cell , increase the average reselection factor of the highest-priority cell to obtain the reselection factor of the highest-priority cell, and obtain the reselection factor of the highest-priority cell according to the The reselection factor of the highest priority cell, adjust the average reselection factor of the remaining cells in the target cell set except the maximum load cell, the target cell and the highest priority cell to obtain the remaining cells The reselection factor of , wherein the sum of the reselection factor of the most loaded cell, the reselection factor of the target cell, the reselection factor of the highest priority cell and the reselection factors of the remaining cells is 1. 18. The user terminal according to claim 10, 12 or 13, wherein the measurement list further includes the intra-frequency and/or inter-frequency reselection factors, and the acquisition sub-module acquires the The specific method of the reselection factor of the first cell is: The reselection factor of the frequency point where the first cell is located is obtained from the measurement list. 19. A user terminal, comprising: A receiver, configured to receive a measurement list from a network server, where the measurement list includes intra-frequency and/or inter-frequency reselection parameters, the intra-frequency is the frequency point where the current serving cell of the user terminal is located, and the inter-frequency is a frequency point different from the frequency point where the current serving cell of the user terminal is located; The processor is configured to perform signal measurement on the cells under the frequency points supported by the user terminal in the measurement list, and obtain measurement parameters corresponding to each cell that are of the same type as the reselection parameter; Among the cells under the click, select a cell whose measurement parameter is better than the reselection parameter to form a target cell set; select a first cell from the target cell set to camp on; The specific manner in which the processor selects the first cell from the set of target cells for camping is: select the first cell from the set of target cells in a preset order, and obtain the first cell from the set of target cells. The reselection factor of a cell; generate a random number for the first cell, and determine whether the random number is less than or equal to the reselection factor; when the random number is less than or equal to the reselection factor, the to the first cell. 20. The user terminal according to claim 19, wherein a specific manner in which the processor selects the first cell from the target cell set for camping is: The first cell is randomly selected from the target cell set, and camps on the first cell. 21 . The user terminal according to claim 19 , wherein the random number ranges from 0 to 1. 21 . 22. The user terminal according to claim 21, wherein, The processor is further configured to, when the random number is greater than the reselection factor, acquire the number of times of selecting cells from the set of target cells in the preset order; and determine whether the number of times of selection is less than a preset number selection control times; when the selection times are less than the preset selection control times, select a second cell from the target cell set again according to the preset order, and obtain the reselection of the second cell factor; when the selection times are equal to the preset selection control times, camp on the first cell. 23. The user terminal according to claim 19 or 21 or 22, wherein, The processor is further configured to, before selecting the first cell from the target cell set according to the preset order, and obtaining the reselection factor of the first cell, for each cell in the target cell set. configure an average reselection factor for each of the cells, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; obtain the load information of each cell in the target cell set from the network server; according to The load information selects the most loaded cell from the set of target cells, and reduces the average reselection factor of the most loaded cell to obtain the reselection factor of the most loaded cell; and, increases the set of target cells The average reselection factors of the remaining cells except the cell with the largest load in is 1. 24. The user terminal according to claim 19 or 21 or 22, wherein, The processor is further configured to, before selecting the first cell from the target cell set according to the preset order, and obtaining the reselection factor of the first cell, for each cell in the target cell set. Each cell is configured with an average reselection factor, wherein the average reselection factor is equal to the reciprocal of the number of cells in the target cell set; a target different from the historically camped cell of the user terminal is identified from the target cell set cell, and increase the average reselection factor of the target cell to obtain the reselection factor of the target cell, wherein the frequency of the target cell is different from the frequency of the cell where the user terminal has historically camped; and, Decrease the average reselection factor of the remaining cells in the set of target cells except the target cell to obtain the reselection factor of the remaining cells, wherein the reselection factor of the target cell is the same as the reselection factor of the remaining cells. The sum of the reselection factors is 1. 25. The user terminal according to claim 19 or 21 or 22, wherein, The processor is further configured to, before selecting the first cell from the target cell set according to the preset order, and obtaining the reselection factor of the first cell, for each cell in the target cell set. Each cell is configured with an average reselection factor, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; the highest priority cell is selected from the target cell set, and the highest priority is increased the average reselection factor of the cell to obtain the reselection factor of the highest priority cell; and, reducing the average reselection factor of the remaining cells in the target cell set except the highest priority cell to obtain the The reselection factors of the remaining cells, wherein the sum of the reselection factors of the highest priority cell and the reselection factors of the remaining cells is 1. 26. The user terminal according to claim 19 or 21 or 22, wherein, The processor is further configured to, before selecting the first cell from the target cell set according to the preset order, and obtaining the reselection factor of the first cell, for each cell in the target cell set. configure an average reselection factor for each of the cells, wherein the average reselection factor is equal to the inverse of the number of cells in the target cell set; obtain the load information of each cell in the target cell set from the network server; according to The load information selects the maximum load cell from the target cell set, and reduces the average reselection factor of the maximum load cell to obtain the maximum load cell reselection factor; identifying from the target cell set A target cell that is different from the cell where the user terminal has historically resided, and the average reselection factor of the target cell is increased to obtain the reselection factor of the target cell, where the frequency of the target cell and the user The frequency points of the cells where the terminal historically resides are different; the highest priority cell is selected from the target cell set, and the average reselection factor of the highest priority cell is increased to obtain the reselection factor of the highest priority cell; According to the reselection factor of the most loaded cell, the reselection factor of the target cell and the reselection factor of the highest priority cell, adjust the set of target cells except the most loaded cell, the target cell and the the average reselection factors of the remaining cells other than the highest priority cell to obtain the reselection factors of the remaining cells, wherein the reselection factors of the most loaded cell, the reselection factors of the target cell and the The sum of the reselection factor of the highest priority cell and the reselection factors of the remaining cells is 1. 27. The user terminal according to claim 19, 21 or 22, wherein the measurement list further includes the reselection factor of the same frequency and/or the different frequency, and the processor obtains the first The specific method of the reselection factor of a cell is: The reselection factor of the frequency point where the first cell is located is obtained from the measurement list. 28. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and when the computer program is executed by hardware, the method described in any one of claims 1 to 9 can be implemented.

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